UPSC Civil Services 2015 Prelims General Studies Paper I

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Question : 34 of 100

Marks: +1, -0

Which one of the following is the best description of the term 'ecosystem'?

A community of organisms interacting with one another.
That part of the Earth which is inhabited by living organisms.
A community of organisms together with the environment in which they live
The flora and fauna of a geographical area

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