When did cellular life first appear on Earth?

Describe at least one way monopolistic competition is similar to perfect competition. How is it similar to monopoly? Describe at least one way oligopoly is similar to perfect competition. How is it similar to monopoly?  Which market would you most like to be a buyer in, and which market would you most like to be a seller in? Why? 

All of the following were components of the mass culture of the “Roaring Twenties” EXCEPT:

All of the following were characteristic of the U.S. during the administrations of Dwight Eisenhower (1953-61) and John F. Kennedy (1961-63) EXCEPT:

As shown by U.S. attitudes toward Cuba and Vietnam in the 1960s, American foreign policy during the Cold War:

The youth counterculture of the late 1960s:

All of the following are true of the civil rights movement between 1950 and 1965 EXCEPT:

New wave music in the early 1980s represented postmodernism in popular culture because:

The oil embargo of 1973 was a significant cause of:

As a result of the practice of red-lining: