Which one of the following pairs is a sedimentary type of biogeochemical cycle?
Correct answer: C. Phosphorus and Sulphur
- A. Oxygen and nitrogen
- B. Phosphorus and CO2
- C. Phosphorus and Sulphur
- D. Phosphorus and nitrogen
Explanation
Sedimentary cycles have their main reservoirs in rocks and sediments; phosphorus and sulphur are the standard examples. Oxygen and nitrogen are primarily gaseous cycles, while CO2 belongs with the carbon cycle.
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