In a process called diffusion, oxygen moves from the alveoli to the blood through the capillaries (tiny blood vessels) lining the alveolar walls. Once in the bloodstream, oxygen gets picked up by the hemoglobin in red blood cells.
Answer:
C
Explanation:
The nucleus contains most of the dna and the mitochondria contains a small amount
Answer: i really dont know
Explanation:
im sorry im just trying to get questions
<span>A. They move and catch their food </span>
