Question

ecology and natural systems: unit test
two male black grouse perform courtship displays
which of the following describes a biotic factor in the black grouses habitat?
choose 1 answer:
a bare rocks that allow female black grouse to blend into their habitat
b snow cover in the winter
c competition among male black grouse at the lek
d a nesting site next to a boulder

Explanation:

Biotic factors are living components in an ecosystem. Rocks, snow, and a boulder - nesting site are abiotic (non - living). Competition among male black grouse involves living organisms and is a biotic factor.

Answer:

C. competition among male black grouse at the lek