PH is a measure of how acidic<span>/basic water is. The range goes from 0 - 14, with 7 being </span>neutral<span>. pHs of less than 7 indicate </span>acidity<span>, whereas a pH of greater than 7 indicates a base. pH is really a measure of the relative amount of free hydrogen and hydroxyl </span>ions<span> in the water.</span>
I would say dust storm, From us moving earth.
I think it is d because the other places are of course wet lands.
Answer:
The model appears to show the carbon dioxide molecules entering the blood cell and the oxygen molecules existing the cell.
