The hydrologic, carbon, nitrogen, and phosphorus cycles are essential to the

Question

. This is why they are called biogeochemical cycles.

biosphere
hydrosphere
lithosphere
asthenosphere

Answer 1

The hydrologic, carbon, nitrogen, and phosphorus cycles are essential to the biosphere. This is why they are called biogeochemical cycles, as they describe the movement of biological elements through both living (bio) and non-living (geo) components of the Earth.