How can models be useful in explaining global system processes and phenomena? (Complete sentence answer)

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Nerve cells are specialized to respond to stimulitrue or false?

How many types of rock can form from the rock cycle