Question

which of the following is an abiotic factor in an ecosystem?
a animals
b water
c grass
d decomposing tree trunks

Explanation:

Abiotic factors are non - living components of an ecosystem. Animals (A) are living (biotic), grass (C) is a plant (biotic), and decomposing tree trunks (D) were once part of a living organism (biotic). Water (B) is non - living.

Answer:

B. water