The Moho refers to the boundary between the crust in the mantle, and occurs because… a. The mantle is hotter than the crust
b. The mantle is more dense than the crust
c. The mantle is liquid
d. The mantle is less dense than the crust

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

When you cross a time zone going east what happens to the time

Are divergent boundaries responsible for tsunamis?