If plant life were to die on Earth,
A) the atmosphere would become denser.
B) oxygen would disappear from the atmosphere.
C) the atmosphere would become too sparse.
D) nitrogen would disappear from the atmosphere.

Question

Quizplus · Accepted Answer

Plants are responsible for producing oxygen through the process of photosynthesis. If plant life were to die on Earth, the amount of oxygen in the atmosphere would decrease progressively over time. Other organisms that consume oxygen such as animals and humans would quickly deplete the remaining oxygen in the atmosphere. Therefore, the disappearance of oxygen from the atmosphere is the best choice.

If Plant Life Were to Die on Earth