Question

Characteristics that give birds the energy they need to fly long distances are:
A.) strong breast muscles and wings.
B.)aerodynamic feathers and lightweight bones.
C.) divided ventricle and air sacs in lungs.
D.) endothermic metabolism and fused bones.

Is it C?

Answer 1

B there aerodyanamic feathers and lightweightbones. Birds have many bones that are hollow (pneumatized) with criss-crossing struts or trusses for structural strength.

Answer 2

thanks!