Question

which of the following levels of ecological organization has only biotic factors?
a biosphere
b biome
c ecosystem
d community

Explanation:

• Biosphere: It includes all life (biotic) and the physical environment (abiotic) on Earth.
• Biome: A large area with similar climate, plants, and animals. It has both biotic (living organisms) and abiotic (climate - related non - living) components.
• Ecosystem: Consists of a community of organisms (biotic) and their physical environment (abiotic).
• Community: A group of different populations of organisms living together. It only contains biotic factors (the living organisms).

Answer:

D. community