Which one of the following is the correct definition of an ecosystem?

A localized association of several plants and animals

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Community of plants, animals, and microbes, interacting with each other and their environment

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Community of plants and microbes, plus their environment

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A community of only organisms interacting with one another

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Solution

The correct option is B Community of plants, animals, and microbes, interacting with each other and their environment
An ecosystem consists of the biological community of living organisms that occur in some particular area, interacting with each other and with the physical and chemical factors of that area. These factors are non-living or abiotic factors.
Therefore, the correct answer is option B.

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