Air trapped in between wool fibres the flow of heat from our body to the cold surroundings

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allows

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doesn’t affect

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Solution

The correct option is A prevents
Air is an insulator of heat. So, air trapped between the wool fibres prevents the flow of heat from the body into the surroundings.

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Similar questions

Assertion:- Woolen clothes are preferred to be worn in winters.

Reason:- Air is trapped inside the woolen fibres which prevents the heat loss from human body.

__ have hair to trap dust particles present in the air and stops them from entering our body.

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