Answer:
The oxygen enters the bloodstream from the alveoli, which are tiny sacs in the lungs where gas exchange takes place. The transfer of oxygen into the blood is through simple diffusion. While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries and starts with high concentration but fades to low concentration.
Explanation:
This is all of them i believe...
Quite possibly. See, if a parent died when a child is young, then that automactically goes straight to neglecting to nurture, which may lead to depression, and, in late teens, or early adult life, death. I hope you found this answer helpful! (:
Answer:
I think it's B am not sure but I hope this helps !
Explanation:
