The drainage characteristic of most deserts, in which streams dry up and do not have enough water to become integrated and reach outside their drainage areas, is called ____________________ drainage.
Fill in the blank(s) with correct word
Question 2Carnotite ____.
A)undergoing pressure becomes bituminous coal
B)is the source of most of the uranium used in nuclear reactors in North America
C)is never found in granitic rocks
D)rarely occurs in the presence of plant remains
E)is another name for shale
Question 3Triassic land-plant communities were significantly different than Permian due to the evolution of angiosperms.
Indicate whether the statement is true or false
Question 4Deserts receive less than ______ centimeters of rain per year, on average.
Fill in the blank(s) with correct word
Question 5Oil shales are ____.
A)found only in North and South America
B)useful for the kerogen that can be extracted
C)less expensive to process than are conventional oil sources
D)currently producing 15 percent of the United States' oil
E)currently producing 30 percent of the United States' oil
Question 6The marine fauna that repopulated the oceans after the Permian extinction was more diverse than the Paleozoic marine fauna.
Indicate whether the statement is true or false
Question 7____________________ zones are characterized by warm, dry, descending air.
Fill in the blank(s) with correct word
Question 8Historically, most coal mined in the United States has been ____.
A)anthracite
B)used in steel production
C)exported to other countries
D)formed from ancient deep-sea deposits
E)from the Appalachian region
Question 9More species went extinct at the end of the Permian than at the end of the Mesozoic.
Indicate whether the statement is true or false
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