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?

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?

anonymous · Answer

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

anonymous · Answer

thanks!