Answer:
I believe it is : water and nitrogen
Explanation:
Answer:
pets can help boost your mood
Explanation:
if you do not have any pets you could have slight depression if there is no one to cheer you up such as your companion
option 2 seems appropriate for me!
OK. First, there's the heart. Then there's the blood vessels. The arteries. Then the veins. And then there's the capillaries. <span />
Answer:
The simplest mechanism by which molecules can cross the plasma membrane is passive diffusion. Passive diffusion is thus a nonselective process by which any molecule able to dissolve in the phospholipid bilayer is able to cross the plasma membrane and equilibrate between the inside and outside of the cell.
