Which of the following pairs is a sedimentary type of biogeochemical cycle?
Correct answer: B. Phosphorus and sulphur
- A. Phosphorus and nitrogen
- B. Phosphorus and sulphur
- C. Oxygen and nitrogen
- D. Phosphorus and carbon dioxide
Explanation
Biogeochemical cycles are of two types: gaseous and sedimentary. In gaseous nutrient cycles, the materials involved in circulation between biotic and abiotic components of the biosphere are gases or vapors and the reservoir pool is the atmosphere or hydrosphere, e.g., carbon, hydrogen, oxygen, nitrogen, and water. In sedimentary nutrient cycles, materials involved in circulation between biotic and abiotic components of the biosphere are non gaseous and the reservoir pool is the lithosphere,e.g., phosphorus, calcium, and magnesium. Sulfur has both sedimentary and gaseous nutrient cycles.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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