Life Science-Ecosystem

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habitat

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The place within an ecosystem where an organism lives.

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niche

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This is what a species does in its habitat to survive.

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producer

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They are organisms that use an outside energy source, such as the sun, to create their own food.

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consumers

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Organisms that cannot make their own food.

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detritivores

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Organisms that consume the bodies of dead organisms and wastes produced by living organisms. This includes scavengers and decomposers.

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food chain

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A simple model that shows how energy moves from a producer to a consumer through feeding relationships.

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food web

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A model of energy transfer that can show how the food chains in a community are interconnected.

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energy pyramid

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A model that shows the amount of energy available in different groups of organisms in an ecosystem.

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competition

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This is the demand for resources, such as food, water, and shelter, in short supply in a community.

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predator-prey relationships

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feeding relationships in an ecosystem.