Since the 1986 ban on leaded gasoline in the United States,
A. there have been no appreciable improvements as a result of this legislation.
B. children's blood lead levels have continued to rise, calling into question the effectiveness of the legislation.
C. children's average blood lead levels have dropped and average IQ's have risen.
Answer: C
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The most likely conditions under which coal beds form are:
a) Hot and dry with little rain and lots of evaporation (desert) b) Deep ocean c) Climate like we see in Antarctica today d) In a swampy and boggy environment under tropical or temperate climate e) All of the above conditions are suitable for coal formation
Briefly explain how exfoliation domes form. What will be an ideal response?
Discuss how the Sunni-Shiite split has recently played out in sectarian violence across the region
What will be an ideal response?
Although the last major ice sheets receded 10,000 years ago, pollen and tree ring data exist to indicate that since 6,000
years ago, there have been small glacial advances and retreats. a. True b. False