Scientific have tried to explain the rate of evolution over time by means of

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.

How is the carbon cycle related to global warming ?

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false