Concept:The living part of an ecosystem consists of all the plants and animals present in that area.
Explanation:An ecosystem is made up of both living things (biotic factors) and non-living things (abiotic factors).
Plants and animals are the living organisms of the ecosystem.
A habitat is simply the natural home of an organism, not the organisms themselves.
Succession refers to the gradual and predictable change in species over time.
A population consists of organisms of only one species in a given area.
A community includes all the different populations of plants and animals that live and interact together in a particular habitat.
Since both plants and animals represent many different species, they form a community.
Answer:C. community