The Comstock Act regulated obscene materials by
A) banning obscene materials from entering (and thus leaving) printing presses.
B) banning obscene materials from supermarkets, department stores, and barber shops.
C) regulating what could be mailed through the U.S. postal service.
D) regulating the sales and distribution of obscene materials by requiring a federal stamp on all such materials, which the government never printed.
Question 2
What is true about intrauterine devices?
A) They are devices women can use to time their menstrual period.
B) They are the second most popular form of birth control in the United States.
C) Their failure rate during the first year is about 23.
D) They have been used by humans since Greek times.
Negative feedback control of a regulated variable.
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