Which monomer has elements bonded together by peptide bonds and is building block for proteins

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

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.

Set comes up with for examples of sound waves ocean wave light wave and hand wave which of tonys examples is not an actual scientific wave