Why are ocean surface temperatures higher near the equator?
A. There are more thermal vents near the equator.
B. There is more solar insolation near the equator.
C. There is less solar insolation near the equator.
D. There are fewer thermal vents near the equator.
Answer: B
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The U.S. Environmental Protection Agency has listed arsenic, lead, mercury, vinyl chloride, and polychlorinated biphenyls as the _____.
a. top five mutagens b. most important neurotoxins c. leading teratogens d. leading causes of cancer e. top five toxic substances
What is the principle underlying the Stratigraphic Record used for documenting global climate change?
a. The physical processes that operate in the modern world also operated in the past b. The nature of the sedimentary strata deposited at a certain location reflects the climate at that location c. The past climate of the Earth changed gradually over time d. None of the above
With what bioregion is the term "steppe" associated?
A) grasslands B) tropical forests C) deciduous forests D) coniferous forests E) tundra
The ________ crust of the sea floor is covered in many places with layers of sediment.
A. serpentine B. basalt C. rhyolite D. granite E. andesite