In the natural carbon cycle, carbon dioxide is returned to the atmosphere by the respiration of animals and chemoorganotrophic microorganisms.

Question

Quizplus · Accepted Answer

This statement is true. Animals and chemoorganotrophic microorganisms release carbon dioxide through the process of respiration, which returns carbon dioxide to the atmosphere. This is one of the natural ways carbon is cycled through the Earth's systems.

In the Natural Carbon Cycle, Carbon Dioxide Is Returned to the Atmosphere