Nucleotide bases in one strand can only be paired with specific bases in the other strand. Why does this characteristic of DNA t hat makes it useful as hereditary material?

coco channel

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.