Science Vocabulary Unit 8: Lessons 1/2 Vocab review

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Biotic factor

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A living or once living part of an organism’s habitat.

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Abiotic factor

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A nonliving part of an organism’s habitat.

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Population

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All the members of one species living in the same area.

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Community

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All the different populations that live together in a certain area.

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Ecosystem

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The community of organisms that live in a particular area, along with their nonliving environment.

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Limiting factor

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An environmental factor that causes a population to decrease in size.

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Producer

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An organism that can make its own food.

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Consumer

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An organism that obtains energy by feeding on other organisms.

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Decomposer

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An organism that gets energy by breaking down biotic wastes and dead organisms and returns raw materials to the soil and water.

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Food chain

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A series of events in an ecosystem in which organisms transfer energy by eating and being eaten.