Biodiversity

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The variety of species in an ecosystem is called

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biodiversity

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A species that is critical to the success of an ecosystem.

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keystone species

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The number of different types of species in an ecosystem

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richness

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The abundance of each species in an area is called

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evenness

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An ecological hotspot is

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An area of very high biodiversity

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A species that exists in one area and nowhere else in the world is called

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endemic species

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Two types of ecological disturbance are

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natural and human-caused

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The stability of an ecosystem depends on two factors.

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Ecosystem resilience and resistance.

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The ability of an ecosystem to recover after a disturbance

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resilience

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The ability of an ecosystem to remain stable throughout a disturbance is

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resistance