You notice that water is running off the feathers of a bird in the rain. the reason is probably that the bird has coated the feathers with ________, which keeps the water out of them. - QAmmunity.org

You notice that water is running off the feathers of a bird in the rain. the reason is probably that the bird has coated the feathers with ________, which keeps the water out of them.

asked Mar 9, 2019 208k views

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