Home Biology Ecosystem Decomposition Biogeochemical cycles are global for elements
Biology Ecosystem Decomposition Single Correct MCQ
Published on: August 20, 2026

Biogeochemical cycles are global for elements

A
that are found in the atmosphere.
B
that are found mainly in the soil,
C
such as carbon, nitrogen, and phosphorus.
D
that are dissolved in water

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The correct answer is:
A

Elements that have a significant gaseous phase (like Carbon, Nitrogen, and Oxygen) can circulate easily throughout the entire planet via the atmosphere. In contrast, sedimentary cycles (like Phosphorus) are localized because their main reservoir is in the soil or rocks.

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