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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.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

What pattern of migration do whales follow?