Which the theory of plate tectonics states that the earths crust is composed of many plates that move gradually across the earths surface?
> t
or
> f

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

Why is terracing used in southeast asian agriculture?

Are divergent boundaries responsible for tsunamis?