The main component of photochemical smog is ____
a. ?ozone
b. ?carbon monoxide
c. ?sulfur dioxide
d. ?chlorofluorocarbons
e. ?volatile organic compounds
ANSWER: a
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If a plowed farm field was restored to natural prairie, we would expect that
A) flooding would be more common in the related watershed. B) more pollutants would flow into the watershed. C) erosion of the soil would decrease. D) less water would be retained in the groundwater reservoir.
Water vapor images from satellites are useful in tracking storm development and growth
Indicate whether the statement is true or false
What type of stress could form the fault in this figure?
A) Confining pressure
B) Horizontal tension
C) Horizontal compression
D) Horizontal pushing
E) Any of these is correct.
Because of the difficulty of projecting a round, 3-dimensional earth on a 2-dimensional piece of paper, paper maps of the world intentionally must distort any or all of the following except
A) shapes of the land masses. B) relative areas of the places on the map. C) absolute altitude of the land masses. D) compass directions. E) distances between places.