Looking at the image why is evolution not linear (a single line) but instead like branches of a tree? *
(A) because some species share a common ancestor
(b) not every species is related unless you go far back enough in time

100 dollars because yeah

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.