What is the picture being described as? the one that has x over it

Which step if the scientific method relies more heavily on newly collected data than on creativity and innovation

An easy way to calculate the amount of energy available at each level is to what?

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.