Answer:
The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
Explanation:
Answer:
El animal mas rapido es un guepardo. El animal mas grande es el leon
Explanation:
B is the answer. evolution
Please mention the option so it'll be clear to answer then.
