PLS Which of the following factors is a major reason for the high risk of drought in Africa?
A.
Africa has been getting less rainfall since 1968.
B.
Civil wars have led to the destruction of crops.
C.
The rising elephant population has destroyed watersheds.
D.
The Aswan Dam changed the course of the Nile River

Blank is a naturally occurring gas that's found in most soils and rocks and can cause lung cancer

What is the "great pacific garbage patch"? (a) a large area of marine debris concentrated by rotating ocean currents (b) a large area around the pacific rim where debris collects from natural disasters such as tsunamis (c) an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability (d) a large trash dump located in hawaii

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.