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olga_2 [115]
3 years ago
5

When a person breathes, the nose and mouth take in oxygen-rich air, and they expel oxygen-poor air. Which statement explains the

change in
oxygen concentration of the inspired air?
A The oxygen concentration decreases gradually as it passes through all organs of the respiratory system,
CB. The oxygen concentration decreases gradually as it passes through all the airways of the lungs,
OC. The oxygen concentration decreases quickly in the nose and mouth, and then remains constant as it passes through other organs of
the respiratory system,
CD. The oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system,
Biology
1 answer:
kkurt [141]3 years ago
7 0

Answer:

the oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system

Explanation:

The human respiratory system is responsible for taking in oxygen-rich air, and they expelling oxygen-poor air. The respiratory system consists of lungs, which helps in the exchange of gases: Oxygen and carbon dioxide.

The statement ''the oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system'' explains the change in oxygen concentration of the inspired air

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Based on biology and neo-Darwinism, _____ explains how environment selects organizations for survival or extinction.
lutik1710 [3]

Given what we know, we can say that biology and neo-Darwinism both support the idea that natural selection explains how the environment selects organizations for survival or extinction.

<h3>Natural Selection. </h3>
  • This concept is often summarized by the phrase "survival of the fittest".
  • This refers to the ability of an organism to adapt to its environment.
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Therefore, since natural selection involves the survival or extinction of a species based solely upon their ability to adapt and change their genetic organization in response to their environment, we can say that this concept helps to explain how the environment selects organizations for survival or extinction.

To learn more about natural selection visit:

brainly.com/question/2725702?referrer=searchResults

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2 years ago
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Answer:

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