Which of the following chemicals is implicated in both global warming and ozone depletion?

A. chlorofluorocarbons
B. methane
C. carbon dioxide
D. sulfur dioxide


Answer: A

Environmental & Atmospheric Sciences

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Humus has a consistency not unlike that of ________

A) putty B) sponges C) gelatin D) rock E) roast beef

Environmental & Atmospheric Sciences

Geologists have a very good record of the breakup of Pangaea because of ____

A)extensive guide fossils B)preservation of the continental crust from the Mesozoic C)the high rate of seafloor spreading during the Mesozoic D)extensive evaporite deposits E)magnetic anomalies preserved in oceanic crust

Environmental & Atmospheric Sciences

Volcanic domes commonly are partially destroyed when

A) gases are released slowly out the top of the dome, dissolving it. B) steep parts of the dome collapse and cause small pyroclastic flows. C) fast-moving, low-viscosity lava carries away part of the dome. D) the center of the dome collapses, forming a composite volcano. E) All of these are correct.

Environmental & Atmospheric Sciences