Question

Why is it essential that elements move through biogeochemical cycles in the ecosystems?

Answer 1

For maintaining the natural levels in the environment.

Explanation:

The important substances such as oxygen, nitrogen, and water etc., undergo cycling through through the biotic and abiotic compartments of the Earth. It maintains the natural levels in the environment.
This flows of nutrients from living to non-living components in cyclic way is called biogeochemical cycles.