The lowest level of environmental complexity that includes both living and nonliving factors is the

A: Biome

B: Community

C: Ecosystem

D: Biosphere

Ecosystem

An ecosystem is a community made up of living organisms and nonliving components such as air, water, and mineral soil. Ecosystems can be studied in two different ways. They can be thought of as interdependent collections of plants and animals, or as structured systems and communities governed by general rules.

The lowest level of environmental complexity that includes living and nonliving factors is the

C: Ecosystem