Explain how carbon, nitrogen, and phosphorus cycles are integrated in ecosystems.

Explain how carbon, nitrogen, and phosphorus cycles are integrated in ecosystems.

• A. Photosynthesis uses C and requires N and P; decomposition releases N and P for reuse; microbial activity links all cycles and regulates nutrient availability.
• B. Nitrogen and phosphorus cycles operate independently of carbon cycling.
• C. Carbon cycling is independent of nitrogen and phosphorus cycles.
• D. Phosphorus cycles through the atmosphere.

Answer: (A)