How many horns does the average African black rhino have?

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How many colored squares are there on a standard Rubik’s cube?

What bird has the scientific name struthio camelus?

Madison is the state capital of which US State situated on the Great Lakes?

What country lies directly south of Detroit?

A bronze statue of whom stands at the foot of the steps to the Philadelphia Art Museum?

What are the four layers of the rainforest?

In the body what may be endocrine or exocrine?

In what year did ABBA become officially a group?

What was Lucy and Ricky's last name on the TV series "I Love Lucy"?

What hit song plays on the radio alarm clock in the movie "Groundhog Day"?

What instrument was played by jazz musician Tommy Dorsey?

What civilization worshiped a feathered serpent called Quetzalcoatl?

What US state was first to legalize same-sex marriage?

Which group released the album "O.K. Computer" in 1997?

Which award-winning actress starred in the film "Shakespeare in Love"?