A is all the individuals of the same species that live together in a specific area.

population

Explanation:

These are the levels of ecological organization ( from smallest to largest): organisms, populations communities, ecosystem, and biopshere.

Organisms: This level is a single organism from a species.

Population: This level is all the organisms of the same species that love in the same area at the same time

Community: This level is all the populations of different species that live in a certain area.

Ecosystem: This level is the community and all the abiotic factors that influence that community

Biosphere: This is level is Earth.

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