<span>Nevadan, Sevier, Laramide. </span>
1.Beak for catching prey
2.Wings to fly away from danger
3. Ability to balance
Answer:
Explanation:
Gas exchange occurs at the alveoli in the lungs and takes place by diffusion. The alveoli are surrounded by capillaries so oxygen and carbon dioxide diffuse between the air in the alveoli and the blood in the capillaries.