Answer:
the third one was the best combo in my mind that you were all the right answer to this is that what you have to do is the word problems and that the standard
Answer:
Migration
Explanation:
Birds have adapted to the changes in temperature (over generations) and know to migrate when necessary
<span>They create energy for the cell.</span>
This the respiratory system!
The major organ of the respiratory system is the lungs, and in the lungs the air gets divided among smaller and smaller tubes at the end of which the oxygen enters and carbon dioxide leaves the blood!
