The answer would be B. nucleic acids.
Answer:
The answer is "Third choice".
Explanation:
The cellular breath is a combination of microbial reactions that occur within organism cells that cycle compounds into another waste material from oxidative phosphorylation through the transition to hydrogen gas through oxygen or nutritional metabolites. It is the mixes oxygen with fatty acids through animals deflects hydrogen gas to existence activities, like waste material, water, and carbon dioxide.
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
