The continental rise typically ends at a(n) ________ at a depth of about 5 kilometers.
A. slope
B. mid-oceanic ridge
C. abyssal plain
D. continental slope
E. trench
Answer: C
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It is risky for companies to invest in renewable energy because:
a. Pricing for renewable energy resources are artificially low. b. None of the known renewable energy resources are reliable. c. It is expected that renewable energy will fall out of favor with the American public in the next decade. d. Subsidies and tax breaks have to be renewed by the government every few years. e. More than one of these choices is correct.
If you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. Let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. What is going on?
A) After these two elements react, they lose the potential energy to cause harm. B) All elements are inherently dangerous. C) Sodium and chlorine from the elemental form is more concentrated than the sodium and chlorine we get from sodium chloride. D) Sodium chloride has nothing in common with sodium and chlorine.
Which of the following describes an aqueous solution?
A) a mixture of some compound dissolved in water B) a mixture of polar molecules dissolved in a nonpolar solvent C) a mixture of water dispersed in an ionic compound D) a mixture of nonpolar molecules dissolved in a polar solvent E) none of the above
The oceans are a key component in the global climate system. Why?
a) oceans absorb a major amount of the increased atmospheric heat, and climate change results from this b) increased storm activity results from additional evaporation c) melting sea ice changes the albedo of the surface ocean d) ocean circulation is affected by warmer temperatures e) all of the above