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Biology 20 Unit A Rated 100% Correct!!

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Tropic level - A category of living things defined by how it gains its energy; the first trophic level contains autotrophs, and each higher level contains heterotrophs Autotroph - An organism that uses the suns energy and raw materials to make its own food Heterotroph - An organism that feeds on other organisms to gain energy First trophic level - Organisms that make their own food from basic nutrients, sunlight or other nonliving sources Autotrophs Biosphere - The narrow zone around earth that harbours life Abiotic Components - The nonliving components of the biosphere biotic components - Living components of the biosphere Population - A group of individuals of the same species occupying a given area at a certain time Community - The populations of all species that occupy a habitat Ecosystem - A community and its physical and chemical environment Biodiversity - The number of species in an ecosystem Every organism in an ecosystem is connected, the reduction in biodiversity caused by the extinction of a single species causes a domino effect. Food chain - A sequence linking organisms that feed on one anotherProducer - An organism that makes its own food Consumer - An organism that must eat producers or other consumers to survive

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Biology 20 Unit A
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Biology 20 Unit A








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Biology 20 Unit A
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Biology 20 Unit A

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Uploaded on
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