environment medium MCQ

Which biogeochemical cycle does NOT have a significant atmospheric component?

  1. Carbon cycle
  2. Nitrogen cycle
  3. Phosphorus cycle
  4. Water cycle

Answer: Phosphorus cycle

The phosphorus cycle is primarily sedimentary, moving through rocks, soil, and water, with minimal atmospheric involvement unlike carbon or nitrogen cycles.

Topic Biogeochemical Cycles
Exam Relevance UPSC, SSC