The two tectonic plates involved are the Pacific plate, on which the Pacific Ocean resides, and a portion of the North American plate, on which parts of Japan sit.
Personally, I'd say that the answer is adaptation, but the closest thing there is, is evolution.
Answer:
A. H+ ions would not flow
Explanation:
Generally if the amount of a substance is equal on both sides of a semi-permeable membrane, nothing is going to happen unless active transport takes place.
However, in this case, nothing would happen since active transport doesn't seem to be used, as I've mentioned before.
If I'm right I'd say They control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food. Hope it's helpful.
