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What living categories can living organisms in an ecosystem be divided to?

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What kind of organisms live in a ecosystem?

all kinds-- fungi, bacteria (both eubacteria and archaebacteria), mammals, plants, insects, animals, birds-- an ecosystem can be anything working together to form a 'cycle' (

Aristotle divided living organisms into what two categories?

Aristotle initially divided living organisms only into two groups  which are plants and animals. The system was not proven to be good  because there were too many species of