The body region typically referred to as the elbow is anatomically called

Which format should he use to present his data?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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.