Answer:
Passive transport must occur to maintain homeostasis. Active transport must occur to get the needed nutrients in and out of the cell.
Explanation:
They are examples of precipitation
<span>In your cell, this is where the endomembrane system comes in a cell image because one is studded with small ribosomes and one is not.it does not help the cell move.IT IS not a function of the endomembrane system of the cell</span>
D is the best answer
(I am just using my common sense)
Hope I helped :)
A forest ecosystem can support a limited number of bears. This is because available energy is lost from one trophic level to the next. (flies, trout, then bears)