Question

which descriptions can be used for sand on a beach?
○ abiotic factor, once living
○ biotic factor, living thing
○ biotic factor, nonliving thing
○ abiotic factor, nonliving thing

Explanation:

Abiotic factors are nonliving components of ecosystems. Beach sand is nonliving, so it falls into this category. Biotic factors involve living or once-living things, which does not apply to sand.

Answer:

abiotic factor, nonliving thing