Feathers help birds fly and provide insulation.
Straight feathers are dominant to curly feathers .
A part of birds where straight is dominant to curly helps them fly and provides insulation.
a part of birds where what is dominant to curly helps them fly and provides insulation?
A. Animal fur
B. bioaerosols
C. fur and fat
D. Vanes
E. Epidermis
F. sweating
G. staying warm
H. straight