Since the advent of federal legislation in the 1970s, blood-lead levels among children have fallen by about _____%.
A)25
B)35
C)50
D)80

Name: Since the advent of federal legislation in the 1970s, blood-lead levels among children have fallen by about _____%. A)25 B)35 C)50 D)80
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Since the 1970s, federal legislation aimed at reducing lead exposure, such as the removal of lead from gasoline and paint, has significantly decreased blood-lead levels in children by about 80%.

Since the Advent of Federal Legislation in the 1970s, Blood-Lead