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Unicellular and multicellular organisms and microorganisms can obtain their food in 2 different fashions. The can depends on other organisms for food, this is known as a heterotroph. And organisms that synthesize their own food or are "self-feeding" are known as autotrophs. An autotroph can be classified as a "producer". A heterotroph can classified as "consumer" or "decomposer", where a consumer is an organism that consumes other organisms or plants. And a decomposer, for example a parasites, breaks down another organisms cells and feeds upon it.

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12y ago

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