Question

which processes drive the flow of carbon between living and nonliving components of ecosystems? select all that apply. a photosynthesis b evaporation c decomposition d cellular respiration a only b only and d only a, c, and d only

Explanation:

• Photosynthesis: Plants take in carbon dioxide (\(CO_2\)) (non - living component) from the atmosphere and convert it into organic compounds (living component) using sunlight. The chemical equation is \(6CO_2 + 6H_2O

ightarrow C_6H_{12}O_6+6O_2\).

• Decomposition: When organisms die, decomposers (such as bacteria and fungi) break down their organic matter. This releases carbon back into the non - living environment (e.g., as \(CO_2\) or into the soil as organic carbon).
• Cellular respiration: Organisms (both plants and animals) break down organic compounds (living component) to release energy. The chemical equation is \(C_6H_{12}O_6 + 6O_2

ightarrow6CO_2+6H_2O\), which releases \(CO_2\) (non - living component) back into the atmosphere.

• Evaporation: This is a process in the water cycle. It involves the change of water from liquid to gas (\(H_2O(l)

ightarrow H_2O(g)\)) and has no direct role in the carbon flow between living and non - living components of ecosystems.

Answer:

A. Photosynthesis, C. Decomposition, and D. Cellular respiration (A, C, and D only)