Actually science but no subject for thou
how is carbon dioxide exchanged between the biosphere and the atmosphere?
a. plants and animals remove carbon dioxide by cellular respiration, and plants release it by photosynthesis.
b. plants and animals release carbon dioxide by cellular respiration, and plants remove it by photosynthesis.
c. nitrogen-fixing bacteria remove carbon dioxide from the biosphere, and denitrifying bacteria release it into the atmosphere.
d. denitrifying bacteria remove carbon dioxide from the biosphere, and nitrogen-fixing bacteria release it into the atmosphere.

The correct answer is B plants and animals releases carbon dioxide by cellular respiration and plants removes it by photosynthesis.

Explanation:

Cellular respiration occur in both plants and animals.Cellular respiration in case of both plants and animals consist of 3 steps glycolysis, krebs cycle and oxidative phosphorylation.

    The net yield of these 3 steps are carbon dioxide,water and ATP.Carbon dioxide is generated as waste material which is released by plant and animals.

  on the other hand only in case of plant Carbon dioxide is removed from the atmosphere as CO2 is utilized by plants during the course of photosynthesis.

answer; i believe its (ovulation);