In an experiment, a scientist compares the effect of adding acid rain to samples taken from two different lakes. The scientist o
bserves that ten drops of acid rain added to water taken from Lake Minnetonka in southern Minnesota does not change the pH from 7.5, but ten drops of acid rain added to water taken from Upper Kintla Lake in Glacier National Park causes the pH to change from 7.5 to 5.2.
The surface area of the small intestine is covered with Villi and microvilli to increase the amount of places that absorption can occur. which other places receives more nutrients that our body recives