I wasn't here to learn this can someone help me

I Wasn't Here To Learn This Can Someone Help Me

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Answer 1

A debate among scientists on how new species form is based on speciation.

Divergence explains how organisms on Earth are related because it shows how species are similar or different.

Genes play the role in diversity of carrying information that results in changes from one generation to the next.

Natural selection is part of evolution because it explains why attributes are either in existence or have gone extinct.

What do scientists debate about how species are formed ?

One of the main debates among scientists on how new species form centers around the concept of speciation. There are two main hypotheses for speciation: allopatric speciation and sympatric speciation.

Divergence is the process by which different populations or species of organisms evolve from a common ancestor over time. This process is responsible for the diversity of life on Earth. By studying the similarities and differences between different organisms, scientists can infer evolutionary relationships.

Genes are the basic units of inheritance that carry information from one generation to the next. They play a crucial role in creating diversity among organisms. The genetic diversity of a population is the result of mutations, gene flow, and genetic drift.

The theory of natural selection is one of the most important and widely accepted explanations for the diversity of life on Earth. It is the process by which certain traits become more or less common in a population over time, depending on their impact on the survival and reproduction of the organisms that possess them.

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Related Questions

Is copper and silver nitrate a physical change or Chemical change

Answers

Explanation:

One of the most fascinating chemical experiments is the reaction between silver nitrate and copper wire in water. Characterised by fractal-like precipitates, this experiment is a stunning example of a simple redox reaction.

Copper reacting with silver nitrate is a chemical change. In a chemical change, new substances are formed with different chemical properties.

Copper (Cu) is a metal, and silver nitrate is a compound made of silver (Ag), nitrogen (N), and oxygen (O).When copper is added to silver nitrate, a reaction occurs. The copper atoms react with the silver nitrate molecules, resulting in the formation of new substances.

The reaction produces copper nitrate  and silver (Ag) as products.Copper nitrate is a compound formed by the combination of copper, nitrogen, and oxygen, while silver remains unchanged.

The color of the solution changes, indicating a chemical reaction has taken place. Copper nitrate is usually a blue-green color, while silver is a metallic silver color.The chemical properties of the substances involved in the reaction are altered. Copper, being a metal, is malleable and conducts electricity, whereas copper nitrate is a compound and does not possess these properties.

Thus, the reaction between copper and silver nitrate is a chemical change because new substances with different properties are formed.

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When a hydrogen atom is part of a molecular structure, it is always a ___________ atom.

Answers

Answer:

terminal

Explanation:

When a hydrogen atom is part of a molecular structure, it is always a terminal atom.

A solution contains 7.8% W/V ethanol. Express this in units of g/mL.

Answers

A solution that contains 7.8% W/V ethanol is equivalent to 0.078g/mL. Details about weights per volume can be found below.

How to convert W/V% to g/mL?

Weights per volume is a unit for measuring density of a substance. It can be converted to g/mL using the following expression:

w/v% = g/100mL

According to this question, a solution contains 7.8% W/V ethanol. The equivalent of this in g/mL is as follows:

7.8% W/V = 7.8g/100mL

= 0.078g/mL

Therefore, a solution that contains 7.8% W/V ethanol is equivalent to 0.078g/mL.

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when in extinguishing agent is determined to be safe and effective for you from combustible Metals it will

Answers

Dry powder extinguishers

They are for Class D or combustible metal fires, only. They are ineffective on all other classes of fires.

What is an Extinguishing agent ?

Extinguishing Agent means a source of extinguishment in which to quickly and effectively suppress the fire.

They consist of ABC Dry Chemical, BC Dry Chemical, Dry Powder, Water, Foam, Wet Chemical, Halogenated, and Carbon Dioxide.

Dry Chemical extinguishers: Dry chemical extinguishers are the most common and available in few types.

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What is the balanced chemical reaction for Mg+H2=MgH, K+O2= KO, K+S= KS, Ba + Br2= BaBr, Ca + N2= CaN
(Giving brainliest for the answer that shows work) Please and thank you!

Answers

Answer:

1.) 2 Mg + H₂ ------> 2 MgH

2.) 2 K + O₂ -----> 2 KO

3.) K + S -----> KS

4.) 2 Ba + Br₂ -----> 2 BaBr

5.) 2 Ca + N₂ ------> 2 CaN

Explanation:

An equation is balanced when there is an equal amount of each element on both sides of a reaction. If there is an unequal amount, they can be altered by adding coefficients which modify the amount of an element/molecule. It is important that the coefficients are as small as possible while staying as whole numbers.

1.) ------------------------------------------------------------------------------------------------------

The unbalanced equation:

Mg + H₂ -----> MgH

Reactants: 1 magnesium, 2 hydrogen

Products: 1 magnesium, 1 hydrogen

The balanced equation:

2 Mg + H₂ ------> 2 MgH

Reactants: 2 magnesium, 2 hydrogen

Products: 2 magnesium, 2 hydrogen

2.) ------------------------------------------------------------------------------------------------------

The unbalanced equation:

K + O₂ -----> KO

Reactants: 1 potassium, 2 oxygen

Products: 1 potassium, 1 oxygen

The balanced equation:

2 K + O₂ -----> 2 KO

Reactants: 2 potassium, 2 oxygen

Products: 2 potassium, 2 oxygen

3.) ------------------------------------------------------------------------------------------------------

The unbalanced equation:

K + S -----> KS

Reactants: 1 potassium, 1 sulfur

Products: 1 potassium, 1 sulfur

This equation is already balanced with all the elements/compounds having coefficients of 1.

4.) ------------------------------------------------------------------------------------------------------

The unbalanced equation:

Ba + Br₂ -----> BaBr

Reactants: 1 barium, 2 bromine

Products: 1 barium, 1 bromine

The balanced equation:

2 Ba + Br₂ -----> 2 BaBr

Reactants: 2 barium, 2 bromine

Products: 2 barium, 2 bromine

5.) ------------------------------------------------------------------------------------------------------

The unbalanced equation:

Ca + N₂ ------> CaN

Reactants: 1 calcium, 2 nitrogen

Products: 1 calcium, 1 nitrogen

The balanced equation:

2 Ca + N₂ ------> 2 CaN

Reactants: 2 calcium, 2 nitrogen

Products: 2 calcium, 2 nitrogen

This table resembles a condensed version of the modern periodic table. Using the full periodic table as a reference, type the symbols for the elements from part A into this table based on their appropriate group and period.

Answers

re write the question.

Explanation:

it seems incomplete.

Explain one way that God showed precision in his creation. (use complete sentences)

Answers

One way in which God showed precision in his creation was his mighty love on the he has on his creation

The book of John made us to know that: For God do love the world that he gave his only begotten son that whosoever believeth in him shall not perish but have everlasting life.

What is creation?

Creations is the art of producing or making something out of something

So therefore, one way in which God showed precision in his creation was his mighty love on the he has on his creation

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You picked up a dirty test tube with a sticky substance on the outside. You get some of this substance on your hand. What is the first thing you should do

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You picked up a dirty test tube with a sticky substance on the outside. You get some of this substance on your hand. The first thing that I should do is wash my hand and then tell the teacher.

Define the test tube.

A test tube often referred to as a culture tube or sample tube, is a typical item of lab glassware that is made up of a finger-like length of clear plastic or glass tubing that is open at the top and closed at the bottom. Usually, test tubes are stored on dedicated racks.

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At a particular temperature, the solubility of Kr in water is 0.060 M when the partial pressure is 0.90 atm. What partial pressure (in atm) of Kr would give a solubility of 0.150 M

Answers

At a particular temperature, the solubility of He in water is 0.060 M when the partial pressure is 0.90 atm. 2.27 atm is the partial pressure of Kr would give a solubility of 0.150 M.

What is Henry's Law ?According to Henry's law, the weight of a gas dissolved by a liquid is proportional to the pressure of the gas onto the liquid.With very few exceptions, a solute molecule in an extremely diluted solution will only have solvent molecules as its close neighbors. This means that the likelihood that a specific solute molecule will escape into the gas phase is predicted to be independent of the total concentration of solute molecules.

Solution:

The solubility of gas is directly proportional to partial pressure. It is expressed as:

S = [tex]K_ h \times P _g_a_s[/tex]

where, S = Solubility of gas

[tex]K_h[/tex] = Henry's Law constant

[tex]P_g_a_s[/tex] = Partial pressure of gas

Now, put the values in above expression we get

0.060M = [tex]K_h[/tex] × 0.9 atm

   [tex]K_h[/tex] =  = 0.066 M/atm

Now we have to find the partial pressure of He

0.150 M = 0.066 M/atm × [tex]P_g_a_s[/tex]

[tex]P_g_a_s[/tex] = 2.27 atm

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The volume occupied by 0.4g of hydrogen gas at S.T.P is ________
{H=1.00, Molar volume at S.T.P =22.4dm^3

Answers

Answer:

4.48 dm^3

Explanation:

As given in the problem, the conversion factor for the molar volume of all gases is 22.4 dm^3/mole at STP.  A mole of all ideal gases will occupy 22.4 liters (dm^3).  Calculate the moles of hydrogen contained in 0.4 grams of the gas by dividing the mass by the molar mass of H2.  H2 has a molar mass of 2 grams/mole.

 (0.4 g)/(2 grams/mole) = 0.2 moles H2

(0.2 moles H2 at STP)*(22.4 dm^3/mole at STP) = 4.48 dm^3  (4.48 liters at STP)

Radiometric dating allows scientists to figure out the absolute age of an event.
A. What is a half-life?

B. Which of these four radioactive elements would you choose to date a specimen from the most recent epoch?

Answers

Half-life in geology is defined as the time it takes for a radioactive material or element to decay half its original quantity into a daughter radiogenic isotope.

From the radioactive elements listed the Carbon-14 would be most preferable for dating a specimen.

What is radiometric dating?

Radiometric dating is defined as the process that is used by scientists to calculate the age of geologic materials.

From the data given in the table above, the radioactive element with the most recent half-life is carbon-14 being 5,730 years.

The uses os Carbon-14 include the following:

Used to measure the age of wood,

Used to measure sources of chloride and the age of water

Researchers can use that decay as a kind of clock that allows them to peer into the past.

Used in studying abnormalities of metabolism that underlie diabetes, gout, anemia, and acromegaly.

The carbon-14 is preferably used for dating specimen because it is the most stable and accurately dates archaeological artifacts.

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The half-life of cesium-137 is 30 years. Suppose we have a 150 mg sample. (a) Find the mass (in mg) that remains after t years.

Answers

The half-life of cesium-137 is 30 years. Suppose we have a 150 mg sample. The masses (in mg) that remains after t years A=150/2^t/30yrs

what do you mean by half-life?

A substance's half-life is the amount of time it takes for half of it to decompose.

What is a half-life example?

Half-life is the length of time it takes for half of an unstable nucleus to go through its decay process. A radioactive element's half-life decay time varies depending on the element. For instance, carbon-10 has a half-life of only 19 seconds, making it impossible to discover in nature. On the other hand, uranium-233 has a half-life of almost 160000 years.

When n half-lives have passed, the formula for estimating the amount still left is:-

A=A°/2^n

where,

A=initial amount

A°=remaining amount

n=t/t_{1/2}

A=150/2^t/30yrs

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What is the total pressure of a mixture of he and h2 if the partial pressures are 320 mm hg and 800 mm hg respectively

Answers

Answer:

1120 mm Hg

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The statement, in a mixture of gases, the total pressure is the sum of the individual partial pressures of gases in the mixture paraphrases ________.

Answers

Dalton's law

States that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.

What is Dalton's law of partial pressure ?

Dalton's law, which states that a gas mixture's overall pressure is equal to the sum of its component gases' partial pressures. The pressure that each gas would produce if it occupied the same volume of the mixture by itself at the same temperature is known as the partial pressure.

The pressure that each gas would produce if it occupied the same volume of the mixture at the same temperature alone is referred to as the partial pressure.

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Explain why all the elements of period 3 is placed on the periodic table in period 3

Answers

Answer:

3 Electron shell/orbit

Explanation:

the number of shell an element has is what determines the period of that element.

A compound has a percent composition of 81.71% C and 18.29% H. What is the empirical formula of this compound?

Answers

Considering the definition of empirical formula, the empirical formula is C₃H₈.

Definition of empirical formula

The empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms, that is, the subscripts of chemical formulas are reduced to the most integers. small as possible.

Empirical formula in this case

In this case, in first place you know the percent composition:

C: 81.71 %H: 18.29%

Assuming a 100 grams sample, the percentages match the grams in the sample. So you have 81.71 grams of carbon and 18.29 grams of hydrogen H.

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

C: [tex]\frac{81.71 grams}{12\frac{grams}{mole} }[/tex]= 6.81 molesH:[tex]\frac{18.29 grams}{1\frac{grams}{mole} }[/tex]= 18.29 moles

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

C: [tex]\frac{6.81 moles}{6.81 moles}[/tex]= 1H:[tex]\frac{18.29 moles}{6.81 moles}[/tex]= 2.68 ≅ [tex]\frac{8}{3}[/tex]

To express this relationship in the form of simple integers, it is necessary to multiply by a simple number to achieve this:

C: 1×3  =3 H:≅ [tex]\frac{8}{3}[/tex]×3= 8

Therefore the C: H mole ratio is 3: 8

Finally, the empirical formula is C₃H₈.

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What is the name of the molecule below?
G
O A. Ethyne
O B. Ethene
C. Methene
OD. Methyne
H-C=C-H

Answers

The name of the molecule above is Ethene

What are organic compounds?

Organic compounds can be defined as compounds containing carbon and hydrogen.

Some classes of organic compounds are:

AlkanesAlkenesAlkanolsAlkanalsAlkynes

So therefore, he name of the molecule above is Ethene

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is glycine mono functional?

Answers

Answer:

Yes

Explanation:

Answer:it act as a precursor to proteins

Explanation:

In the reaction catalyzed by the pyruvate dehydrogenase complex, the two carbons constituting the acetyl group are.

Answers

In the reaction catalyzed by the pyruvate dehydrogenase complex, the two carbons constituting the acetyl group are oxidized by NAD+ while attached to the lipoamide.

Pyruvate dehydrogenase influencing the reaction:

A multienzyme complex called pyruvate dehydrogenase (PDH) catalyzes the oxidative conversion of pyruvate into acetyl coenzyme A (CoA), carbon dioxide (CO2), and reducing equivalents in the form of NADH.

Reaction:The pyruvate dehydrogenase complex catalyzes the oxidative decarboxylation of pyruvate to the acetyl group of acetyl-CoA.This complex requires the sequential action of three different enzymes and five different enzymes and five different coenzymes or prosthetic groups - Thiamine pyrophosphate(TPP), flavin adenine dinucleotide(FAD), coenzyme A(CoA-SH), Nicotinamide adenine dinucleotide(NAD).

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A compound has an empirical formula of CH₂O. What is its molecular formula, if its molecular mass is 90 g/mol?

(C=12.01 amu, H=1.008 amu, O=16.00 amu)

A: C3H6O3
B: C9H1809

i need help asap, will give brainliest and 50 points, as this is on my final :)

Answers

Empirical formula mass

[tex]\\ \tt{:}\dashrightarrow 12+2+16[/tex]

[tex]\\ \tt{:}\dashrightarrow 30g/mol[/tex]

n:-

[tex]\\ \tt{:}\dashrightarrow \dfrac{Molecular\:mass}{Empirical\:mass}[/tex]

[tex]\\ \tt{:}\dashrightarrow \dfrac{90}{30}[/tex]

[tex]\\ \tt{:}\dashrightarrow 3[/tex]

Molecular formula

[tex]\\ \tt{:}\dashrightarrow n\times Empirical\: formula [/tex]

[tex]\\ \tt{:}\dashrightarrow 3(CH_2O)[/tex]

[tex]\\ \tt{:}\dashrightarrow C_3H_6O_3[/tex]

What type of cleaning agent should be used to clean a laminar flow hood?
a. 70% Isopropyl Alcohol.
b. 90% Ethyl Propyl alcohol.
c. 90% Isopropyl Alcohol.
d. 50% Ethyl Propyl alcohol.

Answers

The type of cleaning agent that should be used to clean a laminar flow hood is 70% Isopropyl Alcohol.

Isopropyl alcohol is mixed with water for use as a rubbing-alcohol antiseptic. It is also utilized in aftershave creams, hand lotions, and other cosmetics. In enterprise, it is used as a less expensive solvent for cosmetics, drugs, shellacs, and gums, in addition to denaturing ethanol (ethyl alcohol).

Isopropyl alcohol is a colorless, flammable chemical compound with a robust alcoholic smell. As an isopropyl institution related to a hydroxyl group, it's far the handiest example of a secondary alcohol, wherein the alcohol carbon atom is connected to 2 other carbon atoms.

Isopropyl alcohol is pure alcohol and is a colorless liquid with a musty, sharp odor. There are no other components in a bottle of isopropyl alcohol. through assessment, rubbing alcohol consists of isopropyl alcohol among different components, including water. maximum rubbing alcohol manufacturers incorporate 70% isopropyl alcohol.

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Use the following, balanced equation for the question below:
2Al(s) + 3CuCl₂(aq) → 3Cu(s) + 2AlCl3(aq)
How many moles of aluminum are needed to produce 50.0 grams of aluminum chloride?

Answers

Answer:

0.375 moles Al

Explanation:

To find the moles Al, you need to (1) convert grams AlCl₃ to moles AlCl₃ (via molar mass) and then (2) convert moles AlCl₃ to moles Al (via mole-to-mole ratio from equation coefficients). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value (50.0 g).

Molar Mass (AlCl₃): 26.982 g/mol + 3(35.453 g/mol)

Molar Mass (AlCl): 133.341 g/mol

2 Al(s) + 3 CuCl₂(aq) -----> 3 Cu(s) + 2 AlCl₃(aq)

50.0 g AlCl₃           1 mole                 2 moles Al
--------------------  x  ------------------  x  -----------------------  =  0.375 moles Al
                               133.341 g           2 moles AlCl₃

A substance crystallizes with one atom at each corner, one atom on 8 of the edges, and one atom on 6 of the faces. How many atoms are present in one unit cell

Answers

The number of atoms in one unit cell with one atom at each corner, one atom on 8 of the edges, and one atom on 6 of the faces are 4.6atoms.

There is one atom at each corner and there are 8 corners in a unit cell, so there is one atom in each of the eight corners.

Therefore, the number of atom from corners = 1 x 1/8 = 1atom

There are 12 edges, since there are one atom on 8 of the edges the number of atom = 1 x 8/12 = 0.6atom

There is one atom at each face and there are 6 faces in a unit cell, each atom shares two face.

Therefore, the number of atoms on face = 2 x 1/6 = 3

Total number of atoms in one unit cell = 1 + 0.6 + 3 = 4.6atoms

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What is the concentration, in ppb, of
PCB's in a chemical spill, if there
are 6.0 x 10-5 g in 4,600 kg of soil?

Answers

Answer:

1ppm = 1 mg/kg

60460 = 0.13

0.13

Explanation:

Answer:0.013 ppb

Explanation:

Substances composed of atoms that all have the same number of protons are called:.

Answers

The substances composed of atoms that all have the same number of protons are called elements.

What are the names of substances made up of atoms with the same number of protons?

The substances which are made up of atoms with the same numbers of protons are called as element.

An element is a substance with the same number of protons in all of its atoms. Gold is an example of an element. A pure gold bar is made up of only one element, gold.

All matter is composed of substances known as elements, which have distinct chemical and physical properties and cannot be broken down into other substances via ordinary chemical reactions.

Gold, for example, is an element, as is carbon. Only 92 of the 118 elements occur naturally. The remaining elements are unstable because they were only created in laboratories.

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Amines suitable for preparing buffers are often synthesized by treating ammonia with epoxides. Consider the following series of reactions, and draw the structure of compound B.

Answers

It is correct to state that Amines are suitable for preparing buffers are often synthesized by treating ammonia with epoxides. The relative structures of compound B are attached accordingly.

What is an Amine?

Amine is a family of basic chemical compounds formed by replacing hydrogen with one or more monovalent hydrocarbon radicals.

Apart from medications and pharmaceuticals, amines are employed in the production of azo-dyes and nylon.

They are commonly employed in the development of crop protection, pharmaceutical, and water purification chemicals. They are also used in personal care products.

Ethanol amines are the most widely utilized form of amine on the global market.

It should be noted that ammonia attacks epoxides at the least substituted carbon to produce (A.)

The generated product is then made to react with another epoxide, resulting in the synthesis of successive products.

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A physical change involves a change in the identity o the sample.
O True
O False

Answers

It is true because it changes the identity of a persin or a character

State whether it would be worthwhile to investigate finding a catalyst to use in this reaction under standard conditions and explain why?.

Answers

Yes, it will be worthwhile to investigate finding a catalyst to use in this reaction under standard conditions because it is negative.

What is a Catalyst?

This is a substance which speeds up the rate of a chemical reaction by lowering the activation energy.

ΔG being negative indicates a a slow reaction which is why a catalyst under standard conditions should be used.

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Calculate the number of molecules in 3 mol of carbon dioxide (CO2).

Answers

18.06 ₓ [tex]10^{23}[/tex] molecules in 3 mol of carbon dioxide (CO2).

What is Avogadro's number?

The proportionality factor that connects the quantity of substance in a sample to the number of constituent particles in that sample is called the Avogadro constant. The reciprocal mole, which is its SI unit, is specified precisely as NA 6.02214076 × [tex]10^{23}[/tex] [tex]mol^{-1}[/tex]. It bears Amedeo Avogadro's name, an Italian scientist.

When dealing with very big quantities, chemistry uses Avogadro's number. It serves as the foundation for the mole, a unit of measurement that makes converting between moles, mass, and the number of molecules simple. The quantity, for instance, can be used to determine how many water molecules make up a single snowflake.

1 Mole is 6.02ₓ [tex]10^{23}[/tex] molecules.

Therefore 3 Moles of Carbon Dioxide ([tex]CO_{2}[/tex]) =3(6.02ₓ [tex]10^{23}[/tex])

3 Moles of Carbon Dioxide ([tex]CO_{2}[/tex]) =18.06 ₓ [tex]10^{23}[/tex]molecules of [tex]CO_{2}[/tex].

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Consider a 175.7 g sample of the compound manganese(IV) perchlorate.
Using the formula Mn(ClO₄)₄ (MM = 452.74), What quantity in moles of oxygen are in 175.7 g of manganese perchlorate?

Answers

Answer:

6.21 moles O

Explanation:

To find the moles of oxygen, you need to (1) convert grams Mn(ClO₄)₄ to moles Mn(ClO₄)₄ (via molar mass) and then (2) convert moles Mn(ClO₄)₄ to moles O (via mole-to-mole ratio from formula subscripts). It is important to arrange the conversions/ratios in a way that allows for the cancellation of units.

Molar Mass (Mn(ClO₄)₄): 452.74 g/mol

1 Mn(ClO₄)₄ = 1 Mn and 4 Cl and 16 O

175.7 g Mn(ClO₄)₄           1 mole                   16 moles O
---------------------------  x  -------------------  x  ---------------------------  =  6.21 moles O
                                       452.74 g            1 mole Mn(ClO₄)₄

Other Questions
The bond dissociation energy of the OO bond is 495 kJ/mol. Which for which of the reactions shown below is AH 495 kJ/ mol? 0_0 . : 0 : Using the average bond energies from your textbook (Table 8.5), what is the approximate change in enthalpy for the following unbalanced reaction? H-C=C-H(g) + O2(g) CO2(g) + H2O(g) An= 777 kJ + KJ Using the average bond energies from your textbook (Table 8.5), estimate the enthalpy of formation for nitric acid (HNO.). KJ The Lewis symbol of a selenium atom has unpaired electrons and 2 paired electrons. Answer with integers (e.g. 2). unpaired electrons and The Lewis symbol of the selenide ion has paired electrons. Answer with integers (eg. 2). unpaired electrons and The Lewis symbol of the iron(III) ion has paired electrons. Answer with integers (e.g. 2). hardy and weinberg imagined that all of the alleles for all the loci in a population in each generation were present in a single group called the Let C be the boundary-curve of a 5 x 3 rectangle in the sy-plane, equipped with the counterclockwise orientation. Let F(x,y) = (2y - en *)i +9aj. Use Green's theorem to compute fF.dr. you put a mass of 400 g on string. string is 50 cm long and weights 12.5 g what distance between advacent nodes you pexpect for a frequency of 100 hz 4. Which one is an imperative sentence?a) Tell him that you like him.c) Where were you last night?chopb) I have to clean my room.d) We won the game! Please hurry!!! (I JUST NEED THE DATA DRAWINGS AND THE DIAGRAM DRAWINGS)Model a low-gradient, low-velocity stream. Read the scenario. You are on a research trip to observe pronghorn in the prairie grasslands of Colorado. As you observe a herd grazing next to a nearby stream, you notice storm clouds moving in overhead and feel rain beginning to fall. How does the stream act right now upon the objects in it?Analyze the scenario and characterize the slope of the stream, the amount of rainfall, and the terrain of the area. If all your descriptions are correct, proceed to step f. If your descriptions are not all correct, analyze the scenario again and correct your descriptions. Click on the "Check" button. Do this step until all descriptions are correct. Then proceed to step f. Observe what happens to the sand and pebbles in the stream. When ready, press the "Pause" button and write your observations in the space below Low-Gradient, Low-Velocity Stream in the Data section of this guide. Draw what you see in Table A. Proceed to the next activity. Model a low-gradient, high-velocity stream. Read the scenario. As you continue to observe the pronghorn herd, the rainfall gradually increases until it is falling at a steady pace, causing the stream to flow more quickly. How does the stream act right now upon the objects in it?Analyze the scenario and characterize the slope of the stream, the amount of rainfall, and the terrain of the area. If all your descriptions are correct, proceed to step f. Observe what happens to the sand and pebbles in the stream. Compare the erosion of sediment in this scenario and the erosion of sediment in the Low-Gradient, Low-Velocity Stream scenario. When ready, press the "Pause" button and write your observations in the space below Low-Gradient, High-Velocity Stream in the Data section of this guide. Draw what you see in Table B in the Data section of this guide. Proceed to the next activity. Model a high-gradient, low-velocity stream. Read the scenario. You make a second research trip to observe pronghorn in the Colorado Rockies. You are next to a steadily flowing river, observing a local herd, when you start to feel raindrops fall from overhead. How does the river act right now upon the objects in it?Analyze the scenario and characterize the slope of the stream, the amount of rainfall, and the terrain of the area. If all your descriptions are correct, proceed to step f. Observe what happens to the sand, pebbles, and rocks in the stream. Compare the erosion of sediment in this scenario and the erosion of sediment in the Low-Gradient, Low-Velocity Stream scenario. write your observations in the space below High-Gradient, Low-Velocity Stream in the Data section of this guide. Draw what you see in Table in the Data section of this guide. Model a high-gradient, high-velocity stream. Read the scenario. As you continue to observe the pronghorn herd, the storm overhead gradually grows and the rainfall becomes a steady flow, increasing the speed of the river. How does the river act right now upon the objects in it?Analyze the scenario and characterize the slope of the stream, the amount of rainfall, and the terrain of the area. On the left panel, choose the description for each parameter that would correctly model the scenario. If all your descriptions are correct, proceed to step f. Observe what happens to the sand, pebbles, and rocks in the stream. Compare the erosion of sediment in this scenario and the erosion of sediment in the High-Gradient, Low-Velocity Stream scenario. Draw what you see in Table D in the Data section of this guide. Model a low-gradient, high-volume stream. Read the scenario. You make a third and final research trip to observe pronghorn in the flatlands. While making your observations, you are caught in a downpour. You hurry away from the nearby river to seek shelter. What will happen to the flow of water in the river, and how will the river act upon the objects in it? Analyze the scenario and characterize the slope of the stream, the amount of rainfall, and the terrain of the area. On the left panel, choose the description for each parameter that would correctly model the scenario. If all your descriptions are correct, proceed to step f. If your descriptions are not all correct, analyze the scenario again and correct your descriptions. Click on the "Check" button. Do this step until all descriptions are correct. Then proceed to step f. Observe what happens to the sand, pebbles, and rocks in the stream. Compare the erosion of sediment in this scenario and the erosion of sediment in the Low-Gradient, Low-Velocity Stream scenario. Draw what you see in Table E in the Data section of this guide what is the lighting demand load (before derating) for a house with outside dimensions of 30 ft x 48 ft on the first floor and 22 ft x 42 ft on the second floor During American ImperialismWhat were the major arguments in favor of adopting a policy of expansion? the only trophic group that receives nutrients and energy directly from all other trophic groups is typically, the most important elections on a states political calendar are 2. in a contract, should sole discretion clauses be enforced if the party with the discretion behaves unreasonably? should everyone have an obligation to behave reasonably? La siguiente grfica muestra las calificaciones de un grupo de 40 alumnos que van desde el mnimo 7 hasta el mximo 10 de calificacin. Cuntos alumnos sacaron 9? How much work is done in holding a 26 N child, while waiting in line for the Mean Streak roller coaster at Cedar Point for 35 minutes? *3 points910 J. 74 J0 J1. 35 J following statements is true or false?(1)Let L be a CFL, M a regular language, and w a string. Then the problem of determiningw L M is solvable(2) Let L be a CFL, M a regular language, and w a string. Then the problem of determiningw L M is not solvable.(3) Let be an alphabet. Then there are only nitely many languages over .(4) A DFA M accepts the empty string i its initial state is an accepting state. a group of campers decide to take a canoe trip down the river. the campers traveled 25 miles in five hours. at what average speed did the group of campers travel down the river? but in addition to an account of the symphonys form, he fills the reviewsomewhat surprisinglywith language about ______________________(1). Let S = {P, P1, P2, P3} and Q = {P1, P2, P3} where, p=2-1+x?; P1 =1+x, P2 = 1+r?, P3 = x +22 (a) Do the vectors of S form a linearly independent set? Show all of your work or explain your reasoning. (b) Do the vectors of Q form a linearly independent set? Show all of your work or explain your reasoning. (c) Is S a basis for P,? Recall that P, is the vector space of polynomials of degree < 2. Circle YES or NO and Explain Briefly. (d) Is Q a basis for P2? Circle YES or NO and Explain Briefly. = (e) Find the coordinate vector of p relative to the set Q = {P1, P2, P3}. That is express p as a linear combination of the vectors in S. p = 2-2 +2?; P1 =1+r, P2 = 1+x2, P3 = 1+ sharing sales, budgets, and financial goals with employees throughout the organization is referred to as group of answer choices an open system. open-book management. reflecting. filtering. horizontal communication. Merton argues that retreatists reject both the goals and the means of society T/F. a patient in her twenties with graves' disease who takes methomazole tells the nurse that she is trying to conceive and asks about disease manageent during pregnancy. what will the nurse tell her?