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pishuonlain [190]
3 years ago
11

ASAP, ASAP, ILL GIVE COINS HELP ASAP

Biology
1 answer:
jekas [21]3 years ago
5 0

Answer:

structural

Explanation:

In addition to flight and body feathers, birds also have down feathers. Down feathers are soft and fluffy because they don't have barbules and barbicels (the structures that hook feather barbs together). Down feathers help to keep a bird warm by trapping air close to the body, which insulates the bird from the cold.

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