Average velocity can be calculated by dividing displacement over what?

question 7 options:

change in time

change in distance

change in mass

change in density

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.

this would be a math

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects