Which of the following is not a characteristic of desert soils (aridisols)? a. accumulation of minerals b. little organic matter c. sparse vegetation d. none of the above

Arid and semiarid subcategories are part of which climate

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.

Match the letters with the correct terms