In ecology, levels of organization help us to study the environment at different scales. They are the following:
0. Organisms - An individual living being.
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1. Population - a group of individuals of the same species that share a specific space and time.
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2. Community - All the living beings that are found in a shared space and time.
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3. Ecosystem - A community and the physical environment with which they interact.
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4. Biome - A set of similar ecosystems.
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5. Biosphere - It refers to the living organisms on the planet.