Help please and can someone explain it me please

asked Apr 13, 2018 94.2k views

3 votes

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Protein mainly in form of Keratin makes up 90% of the matter in the feather's.

Ryan Peschel answered Apr 15, 2018

6.8k points

4 votes

Protein mainly in the form of Keratin makes up 90% of the dry matter in the feathers

Thenoseman answered Apr 19, 2018

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