Answer:
Hello - this is Mrs. Gussman, your biology teacher. I wrote this exam question. Do not post test questions to the internet! This is a violation of our school academic integrity policy. You need to remove this post immediately.
Explanation:
Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
The waves of a seashore hit the sand, because of the moon the tide lowers and rises. when it lowers the tide pool only has some water and a lot of oxygen when the tide rises it has less oxygen.
