Biogeochemical Cycles

Introduction

Biogeochemical cycles involve the fluxes of chemical elements among different parts of the Earth: from living to non-living, from atmosphere to land to sea, and from soils to plants. They are called “cycles” because matter is always conserved and because elements move to and from major pools via a variety of two-way fluxes, although some elements are stored in locations or in forms that are differentially accessible to living things.

Task

YOUR TASK:

1. Define  biogeochemical cycle.

2. Tell the importance of biogeochemical cycle in the balance of ecosystem.

3.How is the temperature of the Earth partly controlled by carbon?

4. How is nitrogen returned to the atmosphere?

5. Why is leguminous crop rotation used in agriculture?

Process