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Question
Feathers and furs keep birds and animals warm during cold weather because they have .......... trapped in them.
Feathers and furs keep birds and animals warm during cold weather because they have .......... trapped in them.
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Solution
The correct option is A air
A team of researchers has experimentally studied the trapping of air in hairy surfaces and the water-repellent properties of undeformable hairy textures, which is key for animals’ thermoregulation. Hence, Option A is correct. The rest of the options do not express this condition, hence incorrect.
A team of researchers has experimentally studied the trapping of air in hairy surfaces and the water-repellent properties of undeformable hairy textures, which is key for animals’ thermoregulation. Hence, Option A is correct. The rest of the options do not express this condition, hence incorrect.
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