A "hole" in the ozone layer was first discovered over ________
A) Antarctica
B) the equator
C) the United States
D) Africa
E) Hollywood
Answer: A
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Deep-water corals lack the ________ that their shallow-water cousins have
A) bright coloration B) calcium carbonate skeletons C) large reef structures D) stinging tentacles E) symbiotic zooxanthellae algae
What arrangement of atoms does this diagram illustrate? 
A. octahedron B. tetrahedron C. cubic D. dodecahedron
What is another name for a stratovolcano?
a. a cinder cone b. a composite cone c. a waffle cone d. a dome e. a shield volcano
According to the polar front theory,
A) midlatitude cyclones create fronts in the polar regions. B) midlatitude cyclones form in front of several large air masses. C) midlatitude cyclones form along a boundary separating polar air and warmer air to the south. D) midlatitude cyclones form along a boundary separating frigid Arctic air with slightly colder polar air.