Among the following, which is of a biological origin?

None of the above

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Vermi compost

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Urea

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DDT

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Solution

The correct option is A
None of the above

Among the options, vermicompost is of a biological origin. It is the product of the composting process using various species of worms, usually red wigglers, white worms, and other earthworms, to create a mixture of decomposing vegetable or food waste, bedding materials, and vermicast.

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