Find two possible next terms if it is neither arithmetic arithmetic nor geometric: 1, 10, _, _.

Where does the availability of water pose the greatest problem

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.

What is the difference between emigrate and immigrate? ?