How is hydrogen bonding responsible for the heat capacity of water?

List two modern organisms that have pentameral symmetry

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.

What substance acts to prevent sudden ph changes in bodily fluids?