an adolescent asks the nurse about peak bone mass. the most appropriate response would be: Peak bone mass is the highest amount of bone density and mass that a person will have in their lifetime.
Peak bone mass is the highest amount of bone mass that a person has in their lifetime. It is usually reached around the age of 30 and is an important determinant of a person's risk of osteoporosis later in life. Factors that can affect peak bone mass include genetics, diet, and physical activity levels. Maintaining a healthy diet and regular physical activity can help ensure that a person reaches their peak bone mass and reduces their risk of osteoporosis later in life.
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Please help! What are all of the structures called? Anything helps!
Answer:
see below
Explanation:
A-Chonaocytes- These are found in the inner side of sponges , they have a flagellum they help in creating water current which helps the food to come inside along with water.
H-Archaeocytes:- They help in reproduction.
J- Osculum - Helps in excretion or expelling water out of sponge,
G-Ostia:- These are the openings through which water enters into the body of sponge.
The D-Osculum aids in excretion by being the orifice via which water exits the sponge after passing through the spongocoels.
B-Pinacocyte: These cells are flattened and present in a single layer on the surface of the body. They also line the canals. aid in the contraction of the sponge as well as the attachment of the sponge to the substrate.
Flattened cells called C-Porocytes are present on the sponge's outer surface, and they allow water to enter the sponge's body.
E-Amoebocyte: These amoeboid cells may carry out a variety of tasks, including digestion, reproduction, and regeneration.
F-Spices: These are structural components that support the structure of sponges.
(70 Points!) A. In your own words, explain how biomagnification works. Use a fictional substance in your example.
B. How does this sentence relate to biomagnification? “We learned that the solution to pollution is not dilution.”
Biomagnification refers to the process by which toxins or other harmful substances become more concentrated as they move up the food chain. It occurs when a substance enters an ecosystem and is taken up by small organisms, which are then consumed by larger organisms. Each time an organism is consumed, the substance is concentrated in the body of the larger organism, leading to higher and higher levels of the substance in the organisms at the top of the food chain.
For example, imagine a fictional substance called "X" is released into a lake. The "X" is taken up by small aquatic plants, which are then consumed by small fish. The small fish are then consumed by larger fish, and so on, up the food chain. By the time the substance reaches the top predator in the ecosystem, such as an eagle, the concentration of "X" is much higher than it was in the small aquatic plants at the bottom of the food chain.
The sentence "We learned that the solution to pollution is not dilution" relates to biomagnification because it highlights the idea that simply diluting a pollutant by spreading it out over a larger area does not necessarily make it less harmful. Instead, it may just lead to the pollutant being taken up by more organisms, leading to higher levels of the pollutant in the food chain, and potentially more harm to the ecosystem and the organisms living in it.
What is the typical path that dietary cholesterol takes through the digestive system from the mouth to where it is absorbed into the bloodstream?
When food components and gastric enzymes combine in the stomach, cholesterol absorption starts. The stomach controls how much gastric acid, together with bile and pancreatic juice, is sent to the duodenum.
Where does digestional absorption take place?
The majority of the nutrients in your meal are absorbed in your small intestine before being transported by your circulatory system to other areas of your body for storage or use. A special type of cell helps nutrients pass through the gut lining and into the circulation.
How do fats or oils go from the gastrointestinal tract to the heart?
The fats are absorbed by the intestinal cells. Chylomicrons are enormous lipoprotein structures made of long-chain fatty acids that carry lipids through the lymphatic system. Intestinal cells produce chylomicrons.
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help me plss on all of them
2 Answer:
Which of the following is most likely to be an insulator?
a. copper
b. plastic
c. gold
d. silver
3 Answer:
Temperature is a measure of average
a. kinetic energy.
b. amount of calories.
c. amount of work.
d. heat of fusion.
4 Answer:
How would the average body temperature of a healthy human, which is
37 degrees C, be represented in Kelvins?
a. 0°K
b. 236°K
c. 310°K
d. 37°K
5 Answer:
Which of the following would require the greatest number of calories?
a. heating 1 g of water from 10°C to 80°C
b. heating 10 g of water from 10°C to 40°C
c. heating 100 g of water from 10°C to 20°C
d. heating 1000 g of water from 10°C to 12°C
6 Answer:
If a 10.0 g piece of metal required 100 cal to raise its temperature
by 20°C, what would you report as its specific heat?
a. 10 cal/g·°C
b. 200 cal/g·°C
c. 0.5 cal/g·°C
d. 2 cal/g·°C
7 Answer:
Which of the following does not happen during the phase change from
solid to liquid?
a. Heat is absorbed.
b. The temperature rises.
c. Melting occurs.
d. Molecules move faster.
8 Answer:
How much heat is needed to vaporize 100 g of water at 100 degrees C?
a. 54,000 cal
b. 100 cal
c. 80 cal
d. 800 cal
a) Plastic Is an insulator
b) Temperature is the Kinetic energy
c) The temperature in kelvin is 310°K
d) The greatest heat is heating 1000 g of water from 10°C to 12°C
e) The heat capacity is 0.5 cal/g·°C
f) The temperature rises.
g) The heat needed is 54,000 cal
What is an insulator?We know that an insulator has to do with the kind of substance that would not allow heat or current to pass through it. We know that insulators are the opposite of the conductors .
Temperature has to do measure of the average kinetic energy of the molecules of a body. We know that as the temperature increases, the kinetic energy of the molecules increases.
We know that;
H = mcdT
m = mass of the water
c = specific heat capacity of the water
dT = temperature change
100 = 10 * c * 20
c = 100/200
c = 0.5 cal/g·°C
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he primate emphasis on the visual sense is reflected in all of the following except: Group of answer choices the presence of color vision in most species. the reduction in the size of structures related to the sense of smell. visual information from each eye transmitted to visual centers in both hemispheres. enlarged rhinarium. a more forward-facing position of the eyes relative to most other mammals.
All of the following—aside from most species' lack of color vision—reflect the primate emphasis on the visual sense.
What makes the eyes of primates unique?Their frontal face has eyes that are shielded by bony eye sockets. "Binocular vision" is the term for the resulting overlapping visual fields. Primates can estimate relative distance and motion of an item using this sort of vision, which gives them a wider range of depth perception.
Which of the following traits best describes the order of primates?One or more of the following characteristics set primates apart from other mammals: Short nose, poor sense of smell, prehensile five-digit hands and feet with flat nails instead of claws, unspecialized structure, unspecialized behavior, prehensile five-digit hands and feet,
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Which of the following would cause cells to switch from cellular respiration to fermentation?
a. The final electron acceptor in the ETC is not available.
b. The proton-motive force runs down.
c. NADH and FADH supplies are low.
d. Pyruvate is not available.
The factor for cells switching from cellular respiration to fermentation is a) the final electron receptor in the TEC is not available.
The reason certain cells switch from respiration to fermentation is due to their oxygen supply and oxygen demand. If the oxygen demand of the cells is much higher than the oxygen supply, the cells can no longer sustain aerobic respiration. In this case, the cells switch from respiration to fermentation. Like combustion, cellular respiration completely oxidizes glucose to CO2 and water. Fermentation, on the other hand, does not completely oxidize glucose. Instead, small, reduced organic molecules are produced as a waste product. As a result, cellular respiration releases more energy from glucose than from fermentation.
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which of the following is not a characteristic of the 5\'ʹ cap?
The 5\'ʹ cap is a tag for mRNA degradation.
What is mRNA degradation?In bacterial cells, mRNA degradation is a crucial mechanism for managing gene expression. A battery of cellular exonucleases and endonucleases, some of which are universal and others which are exclusively found in specific species, are employed in this process in an ordered manner. A monitoring pathway found in all organisms is nonsense-mediated mRNA degradation. By removing mRNA transcripts with premature stop codons, it primarily serves to prevent mistakes in gene expression. The poly(A) tail of the majority of mRNAs is destroyed by the CCR4-NOT or PARN in a deadenylation-dependent process. The DCP1-DCP2 decapping complex subsequently removes the mRNA's 5' cap. The XRN1 exoribonuclease then breaks down the mRNA in a 5' to 3' orientation after the cap has been removed.To learn more about mRNA degradation refer to:
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Although there is no denying that something killed a third of the population of Ancient Athens, there has been debate as to cause for many years. A historian who lived through it called it The Plague and so for many years, it was accepted to be Yersinia pestis, the same as the bacteria responsible for the Black Death. Recently, though, scientists have become convinced that the outbreak was actually due to typhoid. Given that this opinion of an event that occurred hundreds of years ago has only recently changed, what conclusion can be reached?
A.
Historians understand the language of written records more clearly and have discovered that the symptoms match typhoid.
B.
Scientists have been able to examine samples of human teeth found in the Athens area and isolated typhoid in the pulp.
C.
A recent resurgence of typhoid in the Athens area leads scientists to believe that the climate is perfect for typhoid but not for Yersinia pestis.
D.
There is no real reason for the change except that some scientists believe the plague is just a catch all.
The conclusion that can be reached is that Historians understand the language of written records more clearly and have discovered that the symptoms match typhoid.
So, option A is correct.
What is typhoid?Typhoid fever is described as a life-threatening infection caused by the bacterium Salmonella Typhi and is usually spread through contaminated food or water.
The Black Death also known as the Pestilence the Great Mortality that happened from 1346 to 1353. The plague is an infectious disease caused by a bacillus bacteria which is carried and spread by parasitic fleas on rodents, notably the brown rat.
There are three types of plague, and all three were likely present in the Black Death pandemic Bubonic plague Pneumonic plague and Septicemic plague.
Symptoms for typhoid fever include high fever, headache, stomach pain and either constipation or diarrhea.
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complete the following table solution direction of water movement where is the solute concentration hightest?
Hypertonic cells contain more water than their surroundings. A cell is hypotonic if it contains less water than its surroundings. If the cell has the same amount of water, it will be isotonic.
What is osmosis?If the cell has more water than its surroundings, it is hypertonic (think of hyper as having a lot of sugar). The cell will desire to release water. The cell may shrivel or shrink as a result of this. If a cell has less water than its surroundings, it is hypotonic (think hippos). They enjoy eating. The cell will absorb water, which may cause it to enlarge, swell, or even explode. If the cell has the same amount of water/proportion of water to other components, nothing will happen and the cell will be isotonic. (Think solitary, without any interactions with other objects.)
Here,
Hypertonic cells have a higher water content than their surroundings. If a cell has less water than its surrounds, it is hypotonic. Isotonic means that the cell has the same quantity of water.
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Why doesn't scientific evidence lead to absolute certainty?
Please choose the correct answer from the following choices, and then select the submit answer button.
It is impossible to determine what scientist's results are to be believed.
There is no guarantee that the evidence is reliable.
Natural phenomena can never be explained by science.
There are always new questions to ask and new ways to investigate questions.
Answer:
the last option
I wish you luck in your assignments.
How does genetic play an important role in variation
Answer the following questions in complete sentences.
1. How does freeze-thaw weathering occur in a glacier? What is the direct effect of this type of weathering?
2. What can be the results from abrasion?
3. How does deposition form from a glacier? What are two landforms that can be formed from glacial deposits?
(giving 50 points)
Freeze-thaw occurs when water continually seeps, freezes and expands, it eventually breaks the rock particles apart. Exfoliation is the process which occurs as this develop parallel to the land surface as a consequence of the reduction in the pressure during uplift and erosion.
What is Freeze-thaw weathering?Freeze thaw weathering occurs when the water seeps which are present in the rocks or the pores between soil particles and freezes. The expansion of the water molecule creates high pressures, which can widen the force which is present apart the soil particles.
Abrasions generally heals on their own. However, the abrasions which extend into the dermis layer may result into scarring of the tissues upon healing. The most common mechanism of formation of abrasion is due to the friction which is against the epidermis.
Depositional landforms include the glacial eskers, and kames. Drumlins are also the landforms which are left behind by retreating glaciers. Many of the depositional landforms result from sediment deposited or reshaped by the melting water and are referred to as glacial landforms.
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hep meeeee pls
1 Answer:
Light waves are
a. electric and soundlike
b. magnetic and soundlike
c. electric and magnetic
d. electric only
2 Answer:
Which of the following does "not" require a physical medium through
which to travel?
a. light
b. sound
c. both light and sound
d. neither light nor sound
3 Answer:
Waves with frequencies slightly lower than those of visible light
are called
a. ultraviolet rays
b. gamma rays
c. X-rays
d. infrared rays
3.Which of the following indicates that light is made up of particles
rather than waves?
a. reflection
b. refraction
c. photoelectric effect
d. bending and separation
4.An object is luminous if it can produce
a. fluorescent light
b. incandescent light
c. neon light
d. all of these
5.Light produced from heat is said to be
a. luminous
b. incandescent
c. illuminated
d. fluorescent
6.Light produced by electron bombardment of low-pressure gases is
a. luminous
b. incandescent
c. illuminated
d. fluorescent
1. Light waves are electric and magnetic. The correct option is C.
2. The option that does "not" require a physical medium through which to travel is light. The correct option is A.
3. Waves with frequencies slightly lower than those of visible light
are called infrared rays. The correct option is D.
4. The option which indicates that light is made up of particles rather than waves is photoelectric effect. The correct option is C.
5. An object is luminous if it can produce fluorescent light, incandescent light, and neon light. The correct option is D.
6. Light produced from heat is said to be incandescent. The correct option is B.
7. Light produced by electron bombardment of low-pressure gases is fluorescent. The corect optrion is D.
What are electromagnetic waves?Waves of the electromagnetic field make up electromagnetic radiation; they travel through space while carrying momentum and radiant energy. It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves.
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Due to biomagnification, which of the following will likely contain the most DDT?
(a) Secondary consumer
(b) Producer
(c) Primary consumer
(d) Tertiary consumer
Due to biomagnification Tertiary consumer will likely contain the most DDT. Correct option (d).
Biomagnification is any concentration of a toxin, such as pesticides, in the tissues of tolerant species at increasingly higher levels in a food chain. This rise might be caused by:
Persistence - a material that cannot be broken down by natural processes.Food chain energetics is the process through which the concentration of a material grows progressively as it goes up the food chain.Low or non-existent rate of internal degradation or excretion of the drug, owing mostly to its insolubility in water.Biological magnification refers to the process by which certain substances, such as pesticides or heavy metals, make their way into lakes, rivers, and the ocean, and then move up the food chain in progressively higher concentrations as they are incorporated into the diet of aquatic organisms such as zooplankton, which are then eaten by fish, who are then eaten by larger fish, large birds, animals, or humans.
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If a plant were to be exposed to only red light, would photosynthesis be possible?
a. Photosynthesis does not take place.
b. The rate of photosynthesis increases sharply.
c. The rate of photosynthesis decreases drastically.
d. The rate of photosynthesis decreases and then increases.
The correct answer is c. The rate of photosynthesis decreases drastically.
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose or other sugars. Chlorophyll, the pigment responsible for absorbing light during photosynthesis, absorbs light most efficiently in the blue and red regions of the spectrum, with a peak absorption in the red.
While red light is absorbed by chlorophyll, it is not the most efficient wavelength for photosynthesis. Therefore, if a plant were to be exposed to only red light, the rate of photosynthesis would decrease drastically compared to if the plant were exposed to a full spectrum of light, including blue light.
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3.0g of clean magnesium ribbon 8.0g of clean copper metal were burnt separately in equal volume of air and both metals reacted completely with air; a) State and explain where there was greater change in volume of air Mg =24 Cu = 64 (2 marks)
The copper metal is heated in the air. The magnesium ribbon emits a brilliant light with magnesium oxide, which is white. When oxygen gas is passed over copper in the presence of heat, an oxidation reaction occurs which results in the formation of black copper oxide. The greater change in mass observed when they start to burned.
What is copper metal ?Copper is a mineral and also an element which is essential to our daily lives. Copper is a significant industrial metal due to its high ductility, malleability, thermal and electrical conductivity, and corrosion resistance. Copper is a necessary nutrient in our diet.
Metals are a class of materials which have high light reflection. Copper (Cu), Aluminium (Al), and other metals are the examples.
The combustion of magnesium ribbon is a combined reaction. It is due to the fact that magnesium metal reacts with the oxygen to form the single product magnesium oxide. When magnesium ribbon is burned in the air, it reacts with the oxygen present in the air to form magnesium oxide.
Thus, 3g of clean magnesium ribbon and 8g of clean copper metal were burnt separately in equal volume of air and both mass reacted completely with air and the greater change in mass observed when they start to burned.
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Help please brainliest if correct!!
Complete the Data Analysis and CER. Be sure to answer ALL the bullet point questions and complete a full CER using the data provided.
On the data analysis and CER of the graph:
The topic of the graph is Life expectancy at birth by gender, years and selected countriesThe x-axis represents countries and the y-axis, the years livedAn observation from the graph is that life expectancy in females are higher than that of males.In the next 10 years, there will be a further decline in the life expectancy of both males and females.What is Data analysis and CER?Data analysis is the process of using techniques and tools to identify patterns, trends, and insights in data. This can include cleaning, transforming, and modeling data to make it more useful for decision making or other purposes.
CER stands for "Causal Effects of Treatments" is a statistical framework for estimating the causal effects of interventions (treatments) on outcomes of interest. It can be used in many fields, such as medicine, economics, and social science, to determine the cause-and-effect relationship in observational studies in this case the life expectancy of both genders from 2019 to 2020.
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Which of the following statements about the classical pathway of complement activation is FALSE?
A) C1 is the first protein activated in the classical pathway.
B) The C1 protein complex is initiated by antigen-antibody complexes.
C) C3 is not involved in the classical pathway.
D) Cleaved fragments of some of the proteins act to increase inflammation.
E) C3b causes opsonization.
(b) How does the pH value of 1M potassium hydroxide solution compare with that of 1M aqueous ammonia? Explain(2 marks)
K+ and aOH_ ions are how KOH decomposes. The basicity is influenced by the OH- ions. They have a 1M I concentration, the same as KOH. [OH-]=1 M
What potassium hydroxide is used for?A disinfectant used to clean surfaces, hands, and skin is potassium hydroxide. Lye, commonly known as potassium hydroxide, is an inorganic substance with the chemical formula KOH. It is sold in a variety of forms, including pellets, flakes, and powders. Potassium hydroxide, sometimes known as caustic potash, is an inorganic chemical with the formula KOH. KOH is a typical strong basic, along with sodium hydroxide. It has numerous industrial and specialised uses, the majority of which make use of its caustic properties and acid reactivity.
Which foods contain potassium hydroxide?KOH is a typical food ingredient that is utilised in the production of cocoa, chocolate, and soft beverages. It has several qualities, including thickening and stabilising effects in dishes like ice cream. Additionally, KOH makes baked foods like pretzels crispier. It can be used as a preservative in food. Potassium hydroxide is a stabiliser, thickening agent, and pH adjuster in food. Based on the observance of various good manufacturing practise conditions of use, the FDA has determined that this ingredient is generally safe as a direct human food ingredient.
pOH is the negative logarithm of the compound OH; therefore, pOH is -log1, which equals 0. In light of typical settings of 25 degrees Celsius, pH is therefore 14-pOH, or 14. So that is as simple as a solution at 25 degrees can be.
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If you are fighting an infection, your
a. lymphocytes
b. lymph
might become enlarged and painful.
c. lymph nodes
d.
capillaries
Answer:
The answer is C. lymph nodes
Explanation:
What is currently being done(regulations, laws, protest,fundraising,ets.) to protect blue whales from going extinct? I need helppppp
The International Whaling has proposed a negative kill limit for bluefin tuna as well as a countrywide ban on commercial whaling.
Why do humans value blue whales?
Although blue whales have a huge food requirement, the ocean environment benefits from them rather than is burdened by them. Their iron-rich excrement is a crucial supply of nutrients for the marine food web, boosting production in the Southern Ocean and increasing fisheries yields.
How do whales protect the environment?
The "whale pump"—the way whales graze, poop, migratory, then dive between the ocean's top and depths—moves vital nutrients around the ocean. Thus, robust water bodies and the development of cyanobacteria are supported, which in turn helps lock in a significant quantity of carbon.
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You have a solution of table salt in water. What happens to the
salt concentration as the solution boils?
Select one:
O a. The concentration of salt increases
O b. The concentration of salt decreases.
O c. The concentration of salt stays the same.
Consider the phylogenetic tree of Old World primates.
A cladogram is shown. Humans are at the end. Next is chimpanzees and bonobos, then gorillas, then orangutans, then baboons.
According to the tree, which primates share the most recent common ancestor with humans?
gorillas
chimpanzees
bonobos and chimpanzees
bonobos and gorillas
Answer:
ANSWER: Chimpanzees
Explanation:
The chimpanzee is the creature with which humans have the most recent common ancestor within that clade.
Answer: Technically the answer isnt wrong but its bonobos and chimpanzees
Explanation:
dogs and wolves are more closely related to each other than either is to cats. Draw a phylogenetic tree to show these relationships.
Answer:
Wolf
Dog
|
V
Cat
Explanation:
A phylogenetic tree is a diagram that shows the evolutionary relationships between different organisms. The tree is constructed using a method called cladistics, which looks at shared characteristics among different organisms.
Based on the information you provided, the tree would show that dogs and wolves are more closely related to each other than either is to cats. This would be represented by a branching pattern, with dogs and wolves being on one branch and cats on another branch, with the branch containing dogs and wolves being closer to the trunk of the tree.
It's important to note that this is a simplification and in reality the relationships between species are more complex, with many branches and sub-branches.
The report mentioned ways that people’s lives may change because of climate change, such as rising sea levels, reduced crop efficiency, and heat waves. This information may encourage the public to change the way they use energy, for example how they heat their homes or power their cars.
The report mentioned ways that people’s lives may change because of climate change, such as rising sea levels, reduced crop efficiency, and heat waves. This information may encourage the public to change the way they use energy, for example how they heat their homes or power their cars is a true statement.
What is Climate change?This is referred to as the long-term shifts in temperatures and weather patterns due to different factors.
It could lead to rising sea levels, reduced crop efficiency, and heat waves and the use of energy should be adequately monitored so as to prevent it from becoming worse in today's world.
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The full question:
The report mentioned ways that people’s lives may change because of climate change, such as rising sea levels, reduced crop efficiency, and heat waves. This information may encourage the public to change the way they use energy, for example how they heat their homes or power their cars. true/false
in the lac operon, the protein that binds to the operator to prevent transcription is
The protein that inhibits transcription of the lac operon is a tetramer with four identical subunits called lac repressor.
The lactose operon (lac operon) is a lactose transport and metabolism operon found in E. coli and many other intestinal bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for successful lactose digestion when glucose is unavailable via beta-galactosidase activity. Because gene regulation of the lac operon was the first fully characterized genetic regulatory system, it has become a leading example of prokaryotic gene regulation.
For this reason, it is frequently covered in beginning molecular and cellular biology lectures. François Jacob and Jacques Monod used this lactose metabolism system to figure out how a biological cell knew which enzyme to manufacture. Their work on the lac operon was recognized.
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What do scanning electron microscope and transmission electron microscope have in common
Answer: What they both have in common is that they both contain an electron gun.
Explanation:
What is the basic scientific unit for the volume of an irregular shaped item?
a. seconds
b. celsius
c. milliliters
d. centimeters cubed
e. grams
f. meter
What is the basic scientific unit for the volume of regular shaped item?
a. seconds
b. centimeters cubed
c. celsius
d. milliliters
e. grams
f. meter
Answer:
1.) its D ..
2.) its Meter.
saltwater intrusion occurs when group of answer choices saltwater is added to wells. saltwater is added to lakes and ponds. saltwater is pushed upstream by encroaching storms. groundwater pumped from wells along the coastline causes saline groundwater to move inland.
saltwater intrusion occurs when in all the cases, when saltwater is added to wells. saltwater is added to lakes and ponds. saltwater is pushed upstream by encroaching storms. groundwater pumped from wells along the coastline causes saline groundwater to move inland.
The migration of saltwater into freshwater aquifers is known as saltwater intrusion, and it can have negative effects on groundwater quality, especially drinking water supplies. Aquifers at coastlines may naturally experience saltwater intrusion due to the hydraulic connection between groundwater and seawater. Saline water is denser and has a higher water pressure than freshwater because it contains more minerals. Because of this, freshwater can push saltwater inland.
Fresh water is less readily available when saltwater intrusion occurs. Two scenarios can result in saltwater intrusion: due to overpumping from the wells, there is a lateral intrusion of sea water. Greater salinity migration as a result of upconing close to coastal wells.
Many coastal locations have experienced an increase in saltwater intrusion as a result of certain human activities, particularly groundwater pumping from coastal freshwater wells. Water extraction causes fresh groundwater to sink, which lowers its water pressure and permits saltwater to move farther inland. Navigation canals, agricultural drainage systems, and other channels that allow seawater to travel inland are other causes of saltwater intrusion. Climate change-related sea level rise also adds to saltwater intrusion.
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Filling a well with salt water will cause saltwater intrusion in all cases. Salt water is added to lakes and ponds. An approaching storm pushes salt water upstream. Groundwater pumped from coastal wells causes saline groundwater to flow inland.
The migration of saltwater into freshwater aquifers, known as saltwater intrusion, can adversely affect groundwater quality, especially drinking water supply. Coastal aquifers can naturally intrude into saltwater due to the hydraulic relationship between groundwater and seawater. Salt water contains more minerals, which makes it denser and more pressurized than fresh water. This allows fresh water to push salt water inland.
When saltwater intrudes, freshwater is quickly unavailable. There are two scenarios that lead to saltwater intrusion.
Seawater intrudes from the sides due to overpumping from the well. Increased salinity transfer as a result of upconing near coastal wells.
In many coastal areas, saltwater intrusion is increasing as a result of certain human activities, particularly groundwater pumping from coastal freshwater wells. Fresh groundwater subsides as a result of water extraction, reducing water pressure and allowing saltwater to seep further inland. Another source of intrusion. Sea level rise due to climate change also contributes to salt water intrusion.
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LIMITED TIME!!!! HELP PLEASE!!
Fossils of ancestors of the modern horses show a small, 4-toed, almost dog-like browsing animal named Eohippus. Over time, the horses got larger, lost toes, and changed to a grazing diet.
What is the best explanation for why this change occurred?
Select one:
A. The horses needed to run faster, so they ran more and their leg
and foot structure adapted.
B. The horses changed their environment to fit their needs for
survival.
C. The horses with traits most suited to the changing environment
survived.
D. The horses took the extra energy from a grazing diet and used it
to grow larger.
Answer: ITS B
Explanation:
B
I wish you luck in your assignments.