Answer:
Tigris-Europhates river was located in Mesopotamia.
The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Normal warming is mostly caused by natural gases.
Nolan spent $320. He spent around 40% of his money.
800-480=320.
320/800=0.4
0.4 x 100= 40%
hope this helps!
