Answer:
dont come at me im only answering so i can text a cute boy
Explanation:
Answer:
Birds require high levels of oxygen and, therefore, high rates of gas exchange due to flight demands. Avian resting oxygen consumption is high compared to that of mammals and other vertebrates, and this increases even more during the flight.
Explanation:
Compared to mammals, birds have specific adaptations of the respiratory system that result in higher levels of oxygen exchange.
Answer:
By giving off oxygen during photosynthesis
Explanation:
Sorry I'm not fully sure if thats the answer u need.
The number of people or things which can be conveyed by a vehicle or container.
