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UPSC Civil Services 2013 Prelims General Studies Paper I

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Question : 6

Total: 100

With reference to food chains in ecosystems, consider the following statements:
1. A food chain illustrates the order in which a chain of organisms feed upon each other.
2. Food chains are found within the populations of a species.
3. A food chain illustrates the numbers of each organism which are eaten by others.
Which of the statements given above is/are correct?

1 only
1 and 2 only
1, 2 and 3
None

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