Volcanoes that have the most impact on global climate seem to be those rich in ____
a. nitrogen
b. water vapor
c. carbon dioxide
d. sulfur
e. oxygen
ANSWER: d
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The bob at the end of a vertical spring vibrates up and down once every 2 s. Its frequency is
A. 2 Hz. B. more than 2 Hz. C. 0.5 Hz. D. none of the above
The success of emissions trading programs in limiting pollution depends primarily on
A. the size of the initial cap only. B. how often the cap is lowered only. C. the size of the cap and how often it is lowered. D. the danger of the pollutant being limited. E. the participation of local airports.
A cultural group with a territorial identity is known as a
A) nation. B) province. C) state. D) race. E) class.
What organic product will be formed when ammonium benzoate is treated with HCl?
A) ammonia B) benzoyl ammonate C) benzoic acid D) benzoic ammonia