How have photographs of faces been used to prove the universality of emotions ?

Could someone me with number one you

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.

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what