What are three methods scientists use to study past climate conditions?
PLEASE HELP ME GDSJFD

Answers

Answer 1

Answer:

paleaclimatology

Explanation:

this is method...


Related Questions

Can depletion of the ozone cause a rise in skin cancer among humans? Explain

Please help

Answers

Yes because when the ozone layer gets ruined and it causes more sunlight and UV rays to hit the surface of the earth, so if you are out in the sun it causes you to have more light and UV rays that will effect your skin especially if you are not wearing sunscreen. Over a period of time if you are still in the sun there is a possibility that you will get skin cancer due to the higher UV levels and sunlight

Explain in-detail the method of blood grouping and why should we do that?

Answers

Blood typing is a method to tell what type of blood you have. Blood typing is done so you can safely donate your blood or receive a blood transfusion. It is also done to see if you have a substance called Rh factor on the surface of your red blood cells.

8.
Dave was observing two types of cells mounted on two different microscopic slides 'A' and 'B'
under the microscope. When he had observed the slide 'A' he noticed a large vacant space in the
cells and a dense round body located at one side of the cell. When he had observed the slide 'B',
there was no vacant space in the cell and he noticed a dense round body in the centre of the cell.
a) Identify the type of cell 'A' and 'B'.
b) Name the round dense structure seen in the cell.
c) Write the function of the round dense structure that he observed in the cell.

ans this please
will mark brainliest .​

Answers

Answer:

The correct answer is -

a) A plant cell B animal cell

b) nucleus

C) Vacuole

Explanation:

In plant cells, there is a large vacant space present in the center which is actually a vacuole that plays role in various types such as nutrients storage, water balance. In plant cells, a dense round structure present at one side of the cell known as the nucleus.

In animal cells, the vacuoles are absent or very small however the round dense structure of the nucleus is present in the center of the cell. Thus, the correct answer is -

a) A plant cell B animal cell

b) nucleus

C) Vacuole

Human blood is 90% water and 10% solute. What would happen if you gave
a patient an IV of pure water (0% solute)? The patient's cells will

remain unchanged.

swell or lyse.

shrivel.

Answers

Answer:

When a person receives fluids intravenously (through an IV bag, for example), a saline solution is sometime used. Giving large amounts of pure water directly into a vein would cause your blood cells to become hypotonic, possibly leading to death.

Explanation:

The answer is B: It swells.

A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.

ASAP! 30 POINTS!!! Write a persuasive paragraph that argues either for or against wind energy. Be sure to include both the pros and cons of wind energy in your paragraph. Use all data, evidence and examples that you are aware of in your paragraph.

Answers

Answer:

Disadvantages of wind energy

Unpredictable. Perhaps the biggest disadvantage to wind energy is that it cannot be produced consistently. ...

Threat to wildlife. Wind energy does not cause environmental problems through greenhouse gas emissions, however, turbines can have an impact on wildlife. ...

Noise. ...

Looks. ...

Location limitations.

Explanation:

ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ

Answer:

Wind energy is one of the most commonly used types of renewable energy. and also happens to be one of our fastest-growing sources of electricity. However, while there are a number of environmental benefits to using wind energy, there are some downsides. On the pros side, wind is a clean, renewable energy source, and is one of the most cost-effective sources for electricity. On the cons side, wind turbines can be noisy and unappealing aesthetically, and can sometimes adversely impact the physical environment around them. Similar to solar power, wind power is also intermittent, meaning that turbines are reliant on weather and therefore aren’t capable of generating electricity 24/7. Unlike coal, natural gas, or oil, generating electricity from wind doesn’t result in greenhouse gas emissions. While there are some environmental considerations that come with building large wind farms, once operational, wind turbines themselves don’t require burning any fossil fuels to operate.

Additionally, wind energy is completely renewable and will never run out. In opposition to traditional fossil fuels resources that replenish very slowly, wind naturally occurs in our atmosphere, and we don’t have to worry about supply issues in the future.

As far as upfront costs go, wind farms or individual turbines can be expensive to install. However, once up and running, operating costs are relatively low; their fuel (wind) is free, and the turbines don’t require too much maintenance over the course of their lifetime.

A wind turbine’s effectiveness in generating electricity depends on the weather; thus, it can be difficult to predict exactly how much electricity a wind turbine will generate over time. If wind speeds are too low on any given day, the turbine’s rotor won’t spin.  

This means wind energy isn’t always available for dispatch in times of peak electricity demand. In order to use wind energy exclusively, wind turbines need to be paired with some sort of energy storage technology.

One of the biggest downsides of wind energy is the noise and visual pollution. Wind turbines can be noisy when operating, as a result of both the mechanical operation and the wind vortex that’s created when the blades are rotating. Additionally, because wind turbines need to be built up high enough to capture a good amount of wind, the turbines can often interrupt otherwise scenic landscapes, such as mountain ranges, lakes, oceans, and more.

Explanation:

The diagram shows the life cycle of a fern,
What does stage 2 show?A. A gamete-producing fern plant is flat and shaped like a heart.
B. A zygote forms when a sperm fertilizes an egg cell.
C. A mature spore-producing fern plant has fronds and produces
spores
D. A spore grows into a mature gamete-producing plant,

Answers

Answer:

the correct answer is D!

A spore grows into a mature gamete-producing plant.

Explanation:

hope this helps :)

A spore grows into a mature gamete producing plant is best describe the life cycle of fern.

What is the life cycle of fern?

The life cycle of the fern has two different stages such as sporophyte and gametophyte. The sporophyte stage which releases spores whereas gametophyte stage which releases gametes. Gametophyte plants are haploid whereas sporophyte plants diploid. This type of life cycle is known as alternation of generations.

So we can conclude that a spore grows into a mature gamete producing plant is best describe the life cycle of fern.

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A strand of DNA reads: ATGGCGCTTGACA. What is the sequence of the complimentary (opposite) strand?

Answers

Answer:

TACCGCGAACTGT

Explanation:

Hope this helps! Just remember the base pairs for DNA C=G and A=T

Scientists have studied a fruit fly, Drosophila, to better understand early embryonic development and have discovered that the cell cycle changes as embryonic development proceeds. Model A represents the first 13 cell cycles after fertilization, which only includes two phases. Model B represents cell cycles 14 through 16, which are more complex and include a G2 phase. The figure shows two circular models, labeled Model A and Model B, that represent the cell cycle of fruit flies after fertilization. Model A represents cell cycles 1 through 13, and it contains two phases. Model B represents cell cycles 14 through 16, and it contains three phases.
What of the following explains the advantage of a G2 phase during embryonic development?
A Cells can undergo the cell cycle more quickly with a G 2 phase.
B Cells can replicate more DNA with a G2 phase.
C Cells are checked for DNA damage before entering mitosis with a G2 phase.
D Cells are able to produce two new daughter cells with a G2 phase.

Answers

Answer:

C. Cells are checked for DNA damage before entering mitosis with a G2 phase.

Explanation:

G2 phase is very important phase of cell division in which cells are checked for DNA damage before entering mitosis with a G2 phase as well as correct duplication of the DNA is also verified and cell proteins that are necessary for cell division are also produced. This phase comes after S stage in which replication of DNA occurs so this G2 phase check the damages before starting of mitosis.

Is Standing on a diving board a Kinetic energy or potential energy

Answers

Answer:

Explanation:

Potential Energy. This diver is standing at the end of the diving board, ready to dive. After he/she dives and is falling toward the water, they'll have kinetic energy, or the energy of moving matter. But even as they stand motionless high above the water, he/she has energy

Which gene mutation would have the greatest impact on a protein's amino acid sequence?​

Answers

Answer:

heyyy there fellow weeb, thought id help u with this.

Explanation:

The addition of 2 bases is the most severe of these mutations. Because of a triplet reading of the genetic code, a 2 base insect changes the code readings frame that causes a frameshift mutation that means that each amino acid is incorrect after the mutation's site.

In the periodic table, elements are classified as ____________ according to their properties and their specific location within the periodic table.

Answers

Answer:

metals

Explanation:

In the periodic table, elements are classified as metals, nonmetals, and metalloids according to their properties and their specific location within the periodic table.

What is Periodic table?

The periodic table is also called the periodic table of the elements which is defined as the arrangement of rows and columns of the chemical elements widely used in chemistry, physics and other sciences and usually represented by chemical symbols.

The elements of the periodic table are classified into groups based on the chemical and reactive properties of the elements where the three major groups are metals, nonmetals and metalloids. The metals in the left and bottom parts of the table give up electrons in chemical bonds.

Thus, in the periodic table, elements are classified as metals, nonmetals, and metalloids according to their properties and their specific location within the periodic table.

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why did the scientific use a two-dimensional model instead of of another type of model.

Answers

Answer:

Sometimes, a diagram or image isn't enough. We need to test some things out in three dimensions. There are two main types of three-dimensional models, or models that have length, depth, and breadth, structural models and model organisms.

Explanation:

hope this helps

Explain what other steps need to be taken to demonstrate that each of these factors is needed for photosynthesis.


light

Answers

photosythesis
CO2 + H2O + ( sunlight ) = glucose + O2

Forensic scientist Bennet asks his technician for the scalar quantity of fingerprints found at his crime scene. What would be the technician's most likely answer?

There were 13 fingerprints found at the crime scene.

There were fingerprints in the hallway facing the direction of the kitchen and fingerprints in the kitchen pointing toward the door handle.

There were individual prints dusted at the crime scene, but they have not been identified yet.

There were fingerprints found in the bedroom, some that look like they are sliding down the hallway, and prints leading to the refrigerator.

Answers

Answer:

first answer is correct

Explanation:

just took the test

DNA replication occurs during which phase of the eukaryotic cell cycle?
S phase
G1 phase
G2 phase
M phase

Answers

A phase. Synthesis phase .

Answer: your awnser would be A

Explanation:

What does a model of the carbon cycle show?

A. The amount of Earth’s carbon is constant.

B. The amount of Earth’s carbon cannot be determined.

C. The amount of Earth’s carbon decreases.

D. The amount of Earth’s carbon increases.
I think its A

Answers

Answer:

Changes that put carbon gases into the atmosphere result in warmer temperatures on Earth. This diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans. Yellow numbers are natural fluxes, and red are human contributions in gigatons of carbon per year.

The model of the carbon cycle determines the amount of earth's carbon is constant. Thus, option A is correct.

Carbon is the element that is responsible for the major life forms on earth. The conversion of carbon in varying life forms and the reservoir is given by the carbon cycle.

What is the effect of the carbon cycle on the amount of carbon?

The carbon cycle is operated for the analysis of the conversion of the carbon in different states and life forms in the earth.

The conversion results in the change in the state of the carbon and its concentration in different constituents.

The earth is the reserved closed system and is consisted of a fixed amount of elements.

Thus, the amount of carbon in the earth is constant in the model of the carbon cycle. Thus, option A is correct.

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a _____ force is when two forces cancel each other out and do not affect the motion of an object

Answers

Answer:

Friction and gravity are at work in each picture. Explain how each are at work and how they work together. Balanced forces - Two or more opposite forces are balanced forces if their effects cancel each other and do not cause a change in an object's motion.

Explanation:

Balanced forces are equal and opposite forces that act on the same object. That's why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion.

Which of the following is not a principle of natural selection?

Answers

Answer: The last one on the bottom i'm in biology

The statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others. So, the correct option is D.

What do you mean by Natural selection?

Natural selection is the process through which populations of living organisms adapt and change their needs as per nature.

The given statement gives the idea of adaptation rather than natural selection. Natural selection gives the idea of competing for limited resources. Natural selection always leads to the most favorable types of variation that an individual possess.

Therefore, the statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others.

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Will mark brainliest and give thirteen points

Answers

the awnser is D

a neap tide is when the moon is either above or below earth

and a spring tide is when the moon is on the side/both sides middle of earth.

Hope this helps and isn't too confusing.

SI UNA PERSONA AUMENTA LA CANTIDAD DE GRASAS DE ORIGEN ANIMAL EN SU DIETA, EL CONTENIDO DE COLESTEROL EN LA SANGRE TAMBIÉN AUMENTA. POR LO TANTO, EN LAS PAREDES DE LOS VASOS SANGUÍNEOS SE PUEDEN ACUMULAR PLACAS DE GRASA Y COMO CONSECUENCIA

Answers

Answer:

Eso es verdad. Como esta tu dia :)

Explanation:

what is mentruation? give example​

Answers

Answer: a cyclical discharging of blood

Explanation:

alfred hershey and martha chase designed an experiment to determine the chemical makeup of griffith's transforming principle. define the term bacteriophage and explain why this organism was a good choice for this particular experiment. describe the procedure of the experiment using the terms bacteriophage, DNA, and proteins in your answer. Describe the results of the experiment and connect them to hershey and chases conclusion

Answers

Answer:

Bacteriophages (phages) are viruses that infect only bacteria and do not infect mammalian or plant cells. Phages are ubiquitous in the environment. Phages or bacteriophages were chosen as a model system for their simplicity, as they only contained protein-coated nucleic acid. Alfred D. Hershey and Martha Chase (who were part of the bacteriophage group) in 1952 studying the infection of the bacterium Escherichia coli by the T2 phage show that the information definitely resides in the DNA. They used phage with either [32P] -labeled DNA or [35S] -labeled proteins to infect the bacteria. Immediately afterwards, they centrifuged the sample so that the infected bacteria remain in the pellet and the virus capsids (proteins) remain in the supernatant. [35S] is found in the supernatant, whereas [32P] is found in bacteria. After one cycle of infection, it was observed that when phage labeled in the [35S] proteins were used, only 1% of the radioactivity was incorporated into the progeny. But when phages were [32P] labeled, more than 30% of the radioactivity was in the progeny. They showed directly that what is transmitted from one progeny to another is the DNA and not the proteins, despite having first "diluted" in a bacterium.

Explanation:

Bacteriophages are viruses that infect bacteria in a specific way. Bacteriophages, like other known viruses, are found in an intermediate zone between living organisms and inert matter. Bacteriophages bind to the host pathogenic bacterium, introduce their genetic material, replicate inside it and destroy it. Hersey, along with his assistant Martha Chase, used phages because they knew that T2 phages were made up of 50% proteins and 50% nucleic acids and that phages entered bacteria and reproduced. As the progeny carried the same infection traits, the genetic material of this had to be transmitted to the offspring, but the mechanism was unknown. These scientists carried out an experimental work with the T2 virus, a bacteriophage that infects the bacterium Escherichia coli, which it reproduces by attaching itself to the outer wall of the bacterium, injecting its DNA into it where it replicates and directs the synthesis of the phage's own proteins. Phage DNA is encapsulated within proteins and produces phages, which lyse or disrupt the cell and release phage from progeny. They infected a culture of bacteria with radioactively labeled phages: the protein coat with sulfur (35S) and its DNA with phosphorus (32P). After infection, they separated the phages from the bacteria by violent shaking using a mixer (hence the name of the experiment). By centrifugation the much smaller phages remained in the supernatant and the much larger bacteria in the pellet. 85% of the radioactivity corresponding to DNA appeared in the pellet and 82% of the protein in the supernatant. This result supported the idea that DNA was the only component of the bacteriophage that penetrated the interior of the bacteria and, having the ability to form new phages, constituted the genetic material.

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Energy Changes in Chemical Reactions: Tutorial
Question
Draw the chemical reaction energy diagram for the synthesis of water. Then use the text box tool to write the names or
chemical formulas of the reactants and products on the diagram.
T
Line
Width: 2 pt
LIN
Lines
Shapes

Answers

Answer: Lowkey dont know

Explanation: Lowkey

Wait I know the answer but let me just make sure it is the right answer

What are some things that may cause weathering and erosion?
Choose all that apply:
-Rain
-Rivers
-Wind
-Volcanoes

Answers

Answer:

Rain,  Rivers , Wind

What type of muscle is found in the heart that has gap junctions to allow electrochemical signals to cause rapid contraction?
A. Rough muscle
B. Smooth muscle
C. Cardiac muscle
D. Skeletal muscle

Answers

D) Cardiac Muscle!


hope this helps :)

what is the complementary dna strand for AGC CAT GTA TAC

Answers

Answer: TCG GTA CAT ATG

what's one thing u wonder about ocean exploration

Answers

i wonder what was the first species of fish that ever existed in the ocean

Which of the following correctly describes the relationship between speed and velocity? (4 points)
Speed is the change in velocity over time; velocity is distance plus direction.
Speed is the change in distance over time; velocity is speed plus direction.
Speed is distance plus direction; velocity is speed plus time.
Speed is the change in acceleration; velocity is distance over tim

Answers

Answer: Speed is the change in distance over time; velocity is speed plus direction.

Explanation:

While speed does not include direction, velocity does

For example: If I was traveling North at 5 mph,

The speed would be 5 mph

while the velocity would be 5 mph North

Which level of organization forms the fundamental base for all other levels
in the hierarchy of life? *
Cell

O Tissue
Organ
Organism

Answers

Answer:

organ

Explanation:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

The biological level of organisation range from organelle to biosphere. Therefore, option (A) cell  forms the fundamental base.

What do you mean by hierarchy of life ?

Cells join to form tissues in larger animals, which are clusters of similar cells performing similar or related jobs. Organs are groups of tissues that work together to fulfill a certain task. Organs can be found in both plants and animals. An organ system is a more advanced level of organization made up of organs with similar functions. 

A population is the aggregate term for all members of a species that are present in a given location. An ecosystem is made up of all the living things that exist in a specific location as well as the abiotic, non-living elements of that environment, such as soil nitrogen or rainwater. The biosphere is a group of organisms that is organized at the highest degree possible.

Thus, option (A) cells forms the fundamental base for all other levels

in the hierarchy of life.

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anyone know these please help me out i need a lot of help

Answers

Answer:

1. False

2. True

3. True

4. True

Explanation:

1. Not all mutations are bad! Some actually can provide people with advantages.

2. Back to number 1, yes! Some mutations can give you advantages that people would not normally have.

3. Yes! Melanin helps protect our skin from damage from UV rays from the sun. This is why people with lighter skin tend to “tan” or “burn”.

4. Yes! Mutations are often a random process. We cannot determine whether or not someone will be born with or without a mutation.

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Why does Bedford consider returning in a bigger sphere with guns? He wants to drive out the Selenites. He wants to return for gold. He wants to explore the cave again. He wants to get revenge. what is the greatest common factor of 10, 30 and 45 Angela spent $48.00 on a sweatshirt, a hoagie, and 2 books. The sweatshirt cost $18.95, and the hoagie cost $7.25. The books cost the same amount. How much did each book cost? not addition During WWII, many governments forced Jews to live in urban ghettos which often had walls to keep the occupants inside. What are these ghettos an example of?A. ethnic distributionB. regional concentrationC. forced segregationD. affinity segregation in drosophila melanogaster, the common fruit fly, curved wings "I" and purple eyes "r" are two linked recessive genes found on chromosomes 2. The dominant wild type alleles for those genes are long wings"L" and red eyes "R"a)describe the expected ratio of offspring in the f2 generation of these genes were located on different chromosomesb)the results in the f2 generation of these flies were: 40 long winged, red eyes; 40 curved winged, red eyes; 10 long winged, purple eyes, and 10 curved winged, red eyed. how many map units apart are the genes for curved wings and purple eye color? Which of these statements are correct about two parallel lines in a coordinate plane? Select three that apply. For this question , you will need to refer to both sources A and B.Compare how the two writers convey their different attitudes to manners and politeness.In your answer, you should: comparetheirdifferentattitudes comparethemethodstheyusetoconveytheirattitudes supportyourideaswithquotationsfrombothtexts. Source A - 19th century etiquette guide Source B - 21st century newspaper article The way you behave when out in society is paramount. It is essential that you show the highest level of social refinement possible. For example, if someone offers you their hand, take it. Always remove your hat when entering a building. Be punctual to all social events to which you are invited. Anyone whos ever taken a ride on the London Underground will know that there are some real nuisances out there. All too often, Ive seen people refusing to give their seat up to an elderly passenger. I mean, its just common courtesy, isnt it? Is it really so difficult to just be a little more civil towards other people? Which of the following isolates r correctly?4r - 6 = 2(n + 3) Laurent is preparing a fruit salad. She wants the total carbohydrates from pineapple and watermelon to equal 24 g. Pineapple has 3 g of carbohydrates per ounce and watermelon has 2 g of carbohydrates per ounce. Write and graph an equation to model this situation. what is (2m+8y)+(4+9m)+(-2 -3 PLEASE HELP ME EMERGENCY PLEASE HELP!! IF YOU ARE NOT 100% SURE ABOUT YOUR ANSWER DO NOT ANSWER THEN PLEASE!!Which of the below is an example of when homeostasis fails? *You sweat on a really hot day.You have an asthma attack and your lungs swell, making it hard to breathe.Your heart rate increases as you exercise.(This is 7th grade science) PLS I ONLY HAVE A FFEW MIN TO DO IT p equals to 2x + 3 all over 3x - 2 Express the following equation What does this saying mean?"The best mirror in the world is an old friend" A coat that was $125 but it marked down 30% Which inequalities will have an open circle at -3 GIVING BRAINLIEST:) plz helpWhat current movement is similar to the women's suffrage movement? Plz Explain please help answer number 1 If x+3/3 = y+2/2, then x/3 = ______ PLEASE HELP GUYS PLEASE!!!! I will LOVE WHOEVER HELPME FOREVER