Ecology and Ecosystem Concepts

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Ecology

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Study of interactions of living organisms with one another and with their physical environment.

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Habitat

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Place where a particular population of a species lives.

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Community

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The many different species that live together in a habitat.

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Ecosystem

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A community and all of the physical aspects of its habitat (soil, air, water, weather).

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Abiotic

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The physical, or non-living aspects of a habitat.

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Biotic

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The living organisms of a habitat.

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Biodiversity

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Number of species living within an ecosystem.

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Autotroph

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Organisms that make their own food, producers.

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Heterotroph

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Organisms that consume producers for food, consumers.

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Producer

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Organisms that first capture energy and that make their own food (plants).