Scientists studying the Florida Everglades have found that between 2003 and 2011, there was a 99 percent decrease in raccoons, a 98 percent drop in opossums, a 94 percent drop in white-tailed deer, an 87 percent decrease in bobcats, and no rabbits or foxes were observed. Which has caused the collapse of mammals in this ecosystem?
A. pythons
B. alligators
C. hurricanes
D. pollution
Answer: A
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A. Dust Bowl B. Rose Bowl C. Dust Bin D. Dirty Devil
Which of the following factors distinguishes severe thunderstorms from ordinary thunderstorms?
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Answer the following statement true (T) or false (F)
What happens to the land surface when large ice sheets melt away?
A. The land flexes upward due to isostatic rebound. B. The land surface remains unchanged but seems lower because of the loss of ice. C. The land rises because the rocks are warmer without the ice. D. It subsides because there is less ice on top.