Desertification is ____.
a. strongly linked to human activity
b. only a problem in areas near existing deserts
c. occurring mostly in regions near the equator
d. not a significant problem in the United States
e. a slow natural process that does not cause large economic losses
Question 2
Dust storms ____.
a. are only a concern in areas near deserts
b. affect vegetation and agriculture, but have little direct effect on humans
c. can cause effects on a global scale
d. are always caused by weather patterns and are not affected by human activity
e. are prevented by agricultural planting in sensitive areas
