Nucleotides make up? a. nucleic acids b. proteins c. carbohydrates d. lipids

Did you know that a blue wales tongue weighs more than an elephant?

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 energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?