Science Terms 03/21/2016

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Biotic Factors

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Biotic factor definition, a living thing, as an animal or plant, that influences or affects an ecosystem.

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Abiotic Factors

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Abiotic factors are all of the non-living things in an ecosystem.

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Organism

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An organism is any contiguous living system, such as an animal, plant or bacterium.

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Population

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A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

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Community

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A group of people living in the same place or having a particular characteristic in common.

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Ecosystem

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A biological community of interacting organisms and their physical environment.

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Heterotroph

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An organism deriving its nutritional requirements from complex organic substances.

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Cell

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The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.

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Unicellular

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Consisting of a single cell.

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Multicellular

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Having or consisting of many cells.

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Prokaryote

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A microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.

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Eukaryote

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Eukaryotes include all living organisms other than the eubacteria and archaebacteria.