Question

question 13 of 29 which list includes only biotic parts of an ecosystem? a. decomposers, soil, nutrients b. mammals, birds, oxygen c. algae, grasses, animals d. soil, water, air

Explanation:

Biotic parts of an ecosystem are living organisms. Algae, grasses, and animals are living. Decomposers are biotic but soil and nutrients are abiotic. Mammals and birds are biotic but oxygen is abiotic. Soil, water, and air are abiotic.

Answer:

C. Algae, grasses, animals