Fronts
A) easily mix with each other.
B) can cause uplift.
C) are rarely associated with precipitation.
D) usually separate air masses with similar temperature and pressure characteristics.
Answer: B
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In developing countries, as in Europe:
A) care is taken to make sure no poor person lives in the suburbs B) there is no discernible urban pattern C) the wealthy are accommodated in the outer rings, whereas the poor live near the center of cities as well as in a sector extending from the center D) the poor are accommodated in the outer rings, whereas the wealthy live near the center of cities as well as in a sector extending from the center E) care is taken so no poor person lives in the inner city
Judge the following sentence according to the criteria given below: Many microscopic zooplankton are omnivores BECAUSE they eat other zooplankton in addition to phytoplankton
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
The economic value of biodiversity and ecosystems services is difficult to assess because
A. nobody has studied them. B. we only recognize their value when they are gone. C. we don't directly pay for them. D. All of the statements are correct.
An artesian aquifer occurs where ________
A) a well is dug through layers of sand and gravel into the water table B) a water?bearing porous layer of rock, sand, or gravel has accumulated groundwater over a long period of time C) several aquifers have merged D) a water?bearing layer is trapped between two layers that are less permeable E) granite is overlain by a sandy substrate, allowing percolation into the aquifer