Which part of the United States has the worst acid rain problem?
A) The northeastern United States
B) The Great Plains
C) The Rocky Mountains
D) The southwestern United States
E) The northwestern United States
Answer: A
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A rolling freight car collides with an identical freight car at rest. After coupling they roll with a speed of 2 m/s. From this information the initial speed of the lighter freight car was
A. 4 m/s. B. 8 m/s. C. 6 m/s. D. 5 m/s.
Hong Kong receives most of its rain in summer, typical for this climate type:
A) dry winter continental B) monsoon C) Mediterranean D) tropical rainforest
A much greater use of breeder or fast-neutron reactors would pose a greater safety risk because fast-neutron reactors would generate greater amounts of
A) heavy water, which can easily leak out into the local community near nuclear power plants. B) radon gas, which over many years can greatly increase the risk of cancer in the region surrounding a nuclear plant. C) plutonium, which is more easily used to construct nuclear weapons. D) lead, which is widely used in the creation of bullets and other ammunitions.
Which nonnative species threatens the habitat in Olympic National Park?
A. wild boars B. mountain goats C. gray wolves D. hoary marmots E. mule deer