The density of 4°C water will slightly decrease when it is
A. warmed.
B. cooled.
C. both of these
D. none of the above
Answer: C
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The fall of the Berlin Wall symbolizes the
A) end of the Cold War. B) beginning of the "new world order." C) triumph of capitalism over communism. D) end of the Cold War, the beginning of the "new world order," and the triumph of capitalism over communism.
A sinkhole is most likely to form ____
a. after a hurricane? b. ?during a thunderstorm c. ?any time during the rainy season d. ?after an earthquake e. ?at the end of a dry season
What is true about remaining fossil fuel reserves with respect to climate change?
A. We can burn the remaining reserves without serious consequences. B. About 10% of all fossil fuel reserves should be left in the ground. C. At least 82% of coal reserves and half of natural gas reserves should be left in the ground. D. We can burn the remaining reserves as long as we also produce more renewable energy. E. We cannot burn any of these reserves if we want to avoid climate change tipping points.
At ______ plate boundaries, tectonic plates are pushed away from each other when magma rises to the surface, creating new crust.
Fill in the blank(s) with the appropriate word(s).