Q: Carbon cycles quickly between organisms and
Options:
- (A) O2
- (B) DNA
- (C) comets
- (D) air
- (E) Aves
- (F) ocean
- (G) satellites
- (H) lung
Let's think step by step below.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Carbon cycles quickly between organisms and the atmosphere. Atmosphere is the blanket of air around the earth. Carbon cycles quickly between organisms and the blanket of air around the earth.
Thus, the answer is (D).