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Juli2301 [7.4K]
3 years ago
10

What role does natural variation play in the process of natural selection and, ultimately evolution?

Biology
1 answer:
xenn [34]3 years ago
8 0
Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
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The drop in carbon dioxide in your blood that occurs when you hyperventilate is called hypocapnia. It signals a breakdown in the
daser333 [38]

Answer:

Blood cells

Explanation:

Hypocapnia refers to a situation whereby carbon dioxide is at a reduced level in the blood. This phenomenon is usually caused by deep/rapid breathing known as hyperventilation.

It signals a breakdown in the exchange of gases inside your blood cells where the stuff your body doesn’t want is swapped out for the stuff it desperately needs.

8 0
4 years ago
Describe the geoscience processes that help to change Earth’s surfaces over time.
Kisachek [45]
Geoscience processes such as weathering, erosion, and deposition are constantly changing Earth's surface. The planet's systems interact to shape Earth's history and future. By mapping the natural events in an area and understanding the geological forces involved, future events can be predicted and forecasted.
7 0
3 years ago
Eyelash length is an inherited trait. in the human population, there is an eyelash length gene. there are two possible variants
VMariaS [17]
Humans, like all mammals, are diploid organisms. This means that we have two copies of each chromosome. In diploid organisms, one somatic cell would have two copies of each gene. This means that in one somatic cell, an individual carries two copies of alleles for long eyelashes, and also two copies of alleles for short eyelashes.
3 0
3 years ago
What is so special about nitrogen in the atmosphere
HACTEHA [7]

Answer:

Firstly, the partial pressure of nitrogen (78%) is crucial to breathing purposes. Without this pressure, the lungs will burst and animals cannot survive.

Secondly, nitrogen is required for the formation of amino acids (building blocks of proteins) and other organic compounds that are necessary for the survival of living organisms. Principally, in the atmosphere, nitrogen is present in the form of molecular nitrogen (N2). N2 is fixed by nitrogen-fixing bacteria that form nitrates and nitrites. These molecules are then used in biochemical processes to produce proteins (amino acids) and other organic compounds. In the absence of nitrogen, these processes could become seize of limited significantly thus affecting life overall.

Thirdly, nitrogen and its derivatives act as greenhouse gases that maintain the Earth's temperature within a range that supports life. Yes, the increased abundance of nitrous oxides is not good because of acid rain and other issues, however, still, the presence of nitrogen is important for life on this planet.

5 0
4 years ago
Explain the systems and structures and how they are used by the plant to maintain homeostasis.
bazaltina [42]

Answer:

The given image shows - the Stomata that helps in maintaining homeostasis in the plants.

Explanation:

Stomata are the small structure resemble as tiny or pinholes that found on the underside of the leaves and play many roles in the plant. Stomata help in the gas exchange and also helps in transpiration.  It allows oxygen a gas and water in vapor form from the leaves to the outer environment and let carbon dioxide inside the cell.

This system also helps in transpiration by closing and opening stomata with the help of their guard cell by becoming turgid and flaccid by osmotic pressure.

8 0
3 years ago
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