In which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrients to enter the cycle?
✓ Correct answer: c) Phosphorus cycle
ExplanationThe phosphorus cycle is unique for not have a signifi- cant atmospheric component.Phosphorus is primarily released into the cycle through the weathering of rocks containing phos- phate minerals (e.g., apatite).Weathering releases phosphate ions (PO₄³⁻) into soil and water, making it available for uptake by plants and other organisms.Phosphorus is one of the most im- portant nutrients in biological systems since it is a fundamental ingredient of nucleic acids, phospholipids, and several phosphor- ylated compounds.6
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