Question

1. which of these describes how a ghost crab depends on biotic factors to survive?

a. a ghost crab preys on small crabs and clams.
b. a ghost crab can run forward, backward, and sideways on the tips of its legs.
c. a ghost crab hides by burrowing in the sand.
d. camouflage helps a ghost crab blend in with the sandy beach.

Explanation:

Biotic factors are living components of an ecosystem. In option A, the ghost crab preys on small crabs and clams (both living organisms). Options B, C, and D describe physical characteristics or behaviors related to abiotic (non - living) aspects like sand (a non - living part of the environment in C and D) or the crab's own physical ability (B, which is not related to other living things).

Answer:

A. A ghost crab preys on small crabs and clams.