2. Stonemasons work with rock, cutting it into shapes to use for building. One stonemason was unloading a new delivery of rocks and noticed that the delivery contained two different types of rock.
How could energy have played a role in the different rock types forming?

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.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .