Question

which of the following represents examples of abiotic factors in an ecosystem?
a. water temperatures at different depths in a pond
b. the diversity of species of grasses found in a farmers hayfield
c. the number of mallard ducks living in a wetlands pond
d. population of red - winged blackbirds in a cattail marsh

Explanation:

Abiotic factors are non - living components of an ecosystem. Water temperature is a non - living factor. Species of grasses (B), number of mallard ducks (C), and population of red - winged blackbirds (D) are all biotic (living) factors.

Answer:

A. water temperatures at different depths in a pond