In which way does the composition of soil,
an abiotic factor, rely on living things?

A)Bacteria break down dead matter and
wastes, releasing nutrients into the soil.

B)Bacteria erode rocks into smaller
particles that are added to the soil.

C)Insects make small tunnels in the soil.
Bacteria use these tunnels to break
down dead matter.

D)Insects take in air and minerals and
release these materials into the soil as
wastes.