Cell membranes help organisms maintain homeostasis by controlling what substances may enter or leave cells
Answer:
<em>B. Cell wall </em>
Explanation:
All the others are wrong, and this is the answer on Edgenuity :)
The law states that matter is conserved. It is not randomly llost or gained, but transformed.
This holds true because when a glass of water is left out over night, the water evaporates. The water doesn't magically disappear. It is just transformed into water vapor.
Answer:
they have diffrent part are shape