Which of the items below are true about acid rain? acid rain affects our health. acid rain increases precipitation. acid rain increases the world's food supply. acid rain is of greater concern in more-developed countries. acid rain makes the soil less able to support agriculture.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.