Question

Communities and the abiotic material with which their members interact represent a(

Answer 1

ecosystems

Ecosystems comprise of communities and the abiotic material and forces with which their members interact. The term ecosystem is generally used to refer to the complex network of the biological community of interacting organism and all their interrelationships in the physical environment.

Answer 2

Communities and the abiotic material with which their members interact represent an ecosystem. The ecosystem encompasses all the organisms and the physical and chemical environment within an area.
It is very important to keep all ecosystems, because when the ecosystem is damaged both biodiversity and valuable ecosystem services are lost.