Which of the following lists includes only biotic factors that could be found in this ecosystem? a. crustaceans, rocks, sea anemones b. fish, sea anemones, crustaceans c. rocks, sea anemones, sunlight d. fish, crustaceans, salt water

Ans. Option (B).

Biotic factors are defined as all the living things found in an ecosystem. All animals, microbes, insects, and plants are grouped as biotic factors. On the other hand, non-living things or environmental factors, sun, water, rocks, and air are abiotic factors.

Fishes, sea anemones, and crustaceans are animals, so they are abiotic factors. Thus, the correct answer is option B). fish, sea anemones, and crustaceans.