Which of the following biogeochemical cycles is not a component of the ecosystem?
Correct answer: B. Potassium cycle
- A. Carbon cycle
- B. Potassium cycle
- C. Nitrogen cycle
- D. Oxygen cycle
Explanation
While potassium is an essential nutrient, its cycle is primarily a sedimentary cycle and is not considered one of the major gaseous biogeochemical cycles like the carbon, nitrogen, and oxygen cycles, which involve a significant atmospheric component.
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