Which of the following BEST describes how carbon is transferred from an organism to the physical environment?

A.
an organism exhales carbon dioxide as a byproduct of respiration

B.
an organism obtains carbohydrates by consuming another organism

C.
an organism breaks down carbohydrates and releases heat energy into the environment

D.
an organism uses airborne carbon dioxide for photosynthesis

1 answer

A. an organism exhales carbon dioxide as a byproduct of respiration