Waves ___ with one another when they travel in close proximity to one another

When two or more sound waves occupy the same space, they affect one another. The waves do not bounce off of each, but they move through each other.

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.