What is the average depth of the oceans?
A. 4,000 meters
B. 400 meters
C. 40,000 meters
Answer: A
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Why is there a basin associated with some thrust faults?
A. Thrust sheets depress the crust in front of the thrust. B. Thrust faults form passive margins. C. Thrust sheets form a continent rift. D. Thrust faults thin the crust and cause subsidence.
Which part of the atmosphere contains the highest concentrations of ozone?
A. mesosphere B. thermosphere C. stratosphere D. troposphere
Which of the following is the best explanation for why extinctions are more likely with longer growing seasons in this simulation of Isle Royale? With more plants available...
a. moose are healthier on average and can avoid wolves, leading to extinction of the wolves. b. larger populations of moose and wolves are more vulnerable to environmental fluctuations, increasing the chance of extinction. c. there is not enough room for moose to move around the island looking for food, leading to extinction of the moose and then the wolves. d. moose and then wolf populations grow larger during cycle peaks—with enough wolves, all moose are eaten, leading to extinction for both.
Which of the following is the name for wave clouds that often form over or downwind of a mountain?
A. castellanus clouds B. lenticular clouds C. nacreous clouds D. mammatus clouds