Choose the biotic substances from the following options.

Wool

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Air

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Cotton

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Soil

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Solution

The correct options are
A Wool
C Cotton
Biotic substances are obtained from living beings like animals or plants. Wool is obtained from the fleece of sheep, yak, etc. and cotton is obtained from the seeds of cotton plant. Hence, wool and cotton are natural fibres and biotic materials.

On the other hand, abiotic substances are not obtained from living beings. For example, air, soil, etc.

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Choose the options that have both biotic and abiotic components.

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