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Andre45 [30]
3 years ago
15

What kind of substance aquatic birds use to coat their feathers?

Biology
1 answer:
NISA [10]3 years ago
8 0
Marine birds or aquatic birds secrete a greasy oily substance that is mainly composed of  quite unusual lipids. These birds have an organ  called a preen gland also  uropygial  gland located at the back near the base of the tail that is responsible for the secretion of this substance.

The birds apply this oily substance over their feathers by rubbing their bill and head over the uropygial gland then rubbing off the accumulated oil quite thoroughly over the feathers of wings, back and  every accessible part including  the skin of their legs and feet.

This oil  produces a waterproofing effect on the birds' feathers and thus they do not get wet but water simply runs off their surface. 



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Answer:

stimulates production of red blood cells is a correct answer.

Explanation:

function of the hormone erythropoietin: stimulates production of red blood cells

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The correct answer is -

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3 0
4 years ago
Answers please help
Degger [83]
I’ll help but the image for me isn’t available sorry.
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jek_recluse [69]

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Explanation:

7 0
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