Why is it important that there are different types of chemical bonds in dna

What is the name of the two satelites on mars

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.

The term equestrian relates to which animal? bulls cows horses pigs