Question

which process plays an important role in the biogeochemical cycles of carbon, nitrogen, and phosphorus?
photosynthesis
transpiration
decomposition
respiration

Explanation:

• Photosynthesis: Mainly involves carbon and oxygen cycles (using CO₂ to make glucose), not a key process for nitrogen and phosphorus cycles.
• Transpiration: Is about water movement in plants, not related to carbon, nitrogen, or phosphorus cycles.
• Decomposition: Decomposers break down organic matter, releasing carbon, nitrogen, and phosphorus back into the environment, which is crucial for their biogeochemical cycles.
• Respiration: Involves the release of carbon (as CO₂) but has a limited role in nitrogen and phosphorus cycles.

Answer:

C. decomposition