Question

Define biogeochemical cycles.

Answer 1

Biogeochemical cycles:

1. The term ‘Biogeochemical’ is derived from the word ‘bio’ which refers to living organisms and ‘geo’ which refers to rocks, soil air, and water.
2. The pathways through which elements such as carbon, nitrogen, and oxygen move from the environment to living organisms and get back to the environment are termed biogeochemical pathways.
3. The cycle involves three major steps: the fixation of the atmospheric elemental form, its assimilation into a usable biological form by plants, animals, bacteria, and other living forms, and its return to the atmosphere.