Apentix/AP Environmental Science/Unit 1: The Living World: Ecosystems/Question

AP Environmental Sciencemediummcq1 pt

Which is a key difference between the carbon and phosphorus cycles?

A.Carbon cycles through the atmosphere; phosphorus does not

B.Only carbon involves living organisms

C.Only phosphorus has a geologic reservoir

D.Phosphorus is a greenhouse gas

Explanation

Core Concept

CO₂ is a major atmospheric reservoir; phosphorus moves almost entirely through rock, soil, water, and organisms.

Correct Answer

ACarbon cycles through the atmosphere; phosphorus does not

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