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Carbon cycle

Phosphorus cycle

1.

It is a perfect cycle.

It is an imperfect cycle.

2.

It is a gaseous cycle.

It is a sedimentary cycle.

3.

The major reservoirs of carbon are atmosphere, oceans and fossil fuels.

The main reservoir of phosphate is ferric and calcium phosphate in rocks.

4.

Atmospheric inputs are greater.

Atmospheric inputs are much smaller.

5.

Gaseous exchange between organisms and environment is high.

Gaseous exchange between organisms and environment is negligible.

 

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