These proteins allow substances to enter that wouldn't be able to otherwise. Only small hydrophobic substances can enter cells. However, these proteins aid crucial substsances in entering the cell.<span />
Immune system that is the answer to you question I think
Thirty-five percent<span> of the trees cut down are used to make paper. That means sixty-</span>five percent<span> of the trees cut down are used for something other than paper. Thank you for posting your question. I hope this answer helped you.</span>
Answer:
the central nervous system
Explanation:
hope this helps
