The green revolution refers to advances that took place in?

What does a movement along the demand curve show

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.

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water