Because it is polar and it is to large to cross the membrane and because the concentration gradients are to strong so they have to be diffused.
hope it helps
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Answer: Growing is capable to a certain living organism. Growth means getting larger in size, and for multi-cellular organisms this is done by making more cells. Plants have special tissues called meristems where growth occurs. Single celled organisms increase their numbers by dividing and making more cells like themselves.
Explanation:
The answer is D. Hope it helped. :)
