?

SAT® Subject Test in Biology

Free Version

Upgrade subject to access all content

Moderate

Carbon Cycle

SATBIO-X2YPJF

Carbon is found in all organic material. It is used by plants to form organic molecules but most carbon is found in the atmosphere as carbon dioxide. Which of the following processes releases carbon dioxide back into the atmosphere?

I. Decomposition
II. Respiration
III. Combustion

A

I only

B

II only

C

I and III only

D

II and III only

E

I, II and III