A(n) ________ is an elongated zone of lower pressure between two areas of high pressure
A) storm
B) anticyclone
C) trough
D) cyclone
E) ridge
Answer: C
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Air is often much cleaner after a rain primarily because
A) droplets and crystals scavenge particulates. B) particulates act as condensation nuclei. C) gravitational settling works faster when the air is saturated. D) the lower temperature increases the efficiency of automobile engines.
Humans often manipulate the environment in ways that decrease the overall ecosystem capital because
A) short-term gains are often local, while long-term losses in regulating and cultural services are experienced regionally. B) short-term gains are often regional, while long-term losses in regulating and cultural services are experienced locally. C) long-term gains are often local, while short-term losses in regulating and cultural services are experienced regionally. D) long-term gains are often regional, while short-term losses in regulating and cultural services are experienced locally.
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What will be an ideal response?
Which of the following criteria is NOT a characteristic of a good source region?
A) It must have uniform physical features. B) The area must frequently experience cyclones. C) The air must able to stagnate over the area for long periods of time. D) It must be very large.