option 2 most major cities begin next to bodies of water
Where, I'm unsure, but when, I think I know. There is a theory that the first asteroid to hit Earth was actually a comet. It wiped out the dinosaurs.
Answer:
page 80 in a book
Explanation:
when i looked it up that is what popped up
Deforestation, that would be clearing the land leading to desertification
