Answer
A
Work Step by Step
Option B is incorrect. An ecosystem is a group of communities living in an area along with their environment.
Option C is incorrect. A community is a group of populations living together in an area.
Option D is incorrect. A biome is a group of ecosystems with similar organisms living in them and sharing climates that are very similar.
Option A is correct. A population represents a group of organisms of the same species living together in the same area.
