The recent increase in Atlantic tropical storm and hurricane activity
A) has not been observed in other ocean basins.
B) has been observed in other ocean basins.
C) has been exceeded in other ocean basins.
D) has been exceeded in all other ocean basins except the Indian Ocean.
Answer: A
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Why are elements heavier than iron less abundant than those that are lighter?
A. This is one of the mysteries of cosmic formation that has yet to be answered. B. Because they tend to be unstable, and easily undergo fission C. Because the duration of a supernova is relatively short D. Spectral evidence suggests they are only rare here on Earth.
The explosions at the Fukushima Nuclear Power Plant in northeast Japan following damage by an offshore earthquake blew the roofs off of three of the reactor buildings. The explosions were caused
a. presumably by a meltdown of the reactor cores. b. presumably by steam from the heat exchangers inside the reactor cores c. presumably by a buildup of hydrogen gas when the backup generators were disabled d. terrorists taking advantage of the chaos of the situation e. spent fuel rods that were exposed when the storage water tanks cracked and stopped cooling the rods
What would happen to ozone levels if stratospheric nitric acid levels increased?
A. decrease B. increase C. no change
The information of an energy pyramid reveals that for human food choices,
A) it is more expensive and less efficient to get most of your dietary calories from meats. B) it is more expensive and less efficient to get most of your dietary calories from grains. C) consumers at lower trophic levels do not have as much energy and biomass as consumers at higher trophic levels. D) consumers at higher trophic levels are usually more abundant than consumers at lower trophic levels.