Which of the following pioneered the use of biofuels as a means of energy independence after the global energy crisis of 1973?

A recent public opinion poll found that 47% of respondents approve of the job the president is doing. Subsequent polls found approval ratings of 46%, 48%, and 49%. Based upon this we can say the questions in the poll are what kind of measurement of presidential job approval?

a. Valid b. Reliable c. Fair d. Random

Which of the following is true of the government's ability to impose prior restraint on the media?

a. It is a limited power. b. It is an unlimited power. c. It applies to cases of libel and slander. d. It requires media to give candidates equal coverage time.