Question

What makes the phosphorus cycle different from the carbon cycle

Answer 1

Phosphorus is not abundant in the atmosphere, it comes mostly from the land and ocean.

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Answer 2

The phosphorus cycle is different from the carbon cycle (and other cycles) because (1) it is not in gas state; (2) a cycle happening only in lithosphere, hydrosphere, and biosphere and (3) phosphorus is located in and on land, sea, and sediment.