The feathers of birds are composed of ______?

پرندوں کے پنکھ ______ پر مشتمل ہیں؟
  • Answer: Keratin
Explanation
  • Feathers of birds are primarily composed of keratin.
  • It is a fibrous protein also found in hair, nails, and skin.
  • Keratin provides strength and flexibility.
  • They are essential for flight and insulation in birds.
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