Compare and contrast landscape and a photograph

Me plzzz what is the ratio of water than falls on land as compared to the amount that falls onto the oceans? what role do clouds play in regulating earth’s energy balance? me plzzz

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?

In the 1400s, portugal’s economy was based on a. industry b. exports c. finance d. trade