Part of the organic carbon becomes incorporated in the earth’s crust as coal, gas, petroleum, limestone and coral reefs. Such deposits are removed from circulation for long periods of time, often permanently. Some of them are liberated by industrial and agricultural use of these products; and some CO2 are released from limestone through weathering. But, the circulation of carbon through the ecosystem depends upon living organisms.
Carbon Cycle (5)
In this article we will discuss Carbon Cycle (5)