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haileylee93 Group Title

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?

  • 2 years ago
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  1. rahulchatterjee Group Title
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    B there aerodyanamic feathers and lightweightbones. Birds have many bones that are hollow (pneumatized) with criss-crossing struts or trusses for structural strength.

    • 2 years ago
  2. haileylee93 Group Title
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    thanks!

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