What Greek god is the ruler of the underworld?

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What New York City avenue divides the east side from the west side?

What is a group of Oxen called?

According to the Bible, what is now guarded by an angel holding a flaming sword?

What do the boys use to start a signal fire in the book "Lord of the Flies"?

Who wrote the collection of Science fiction stories that made up the book "I, Robot"?

The tune "Rhapsody in Blue" was first performed in which year?

What site is the home to the famous Intihuatana stone?

Which ocean does the Congo River empty into?

Which direction on a map do lines of latitude go?

Where is the zygomatic bone located in the human body?

How many flowers must honeybees visit to make one pound of honey?

The viceroy butterfly is so named because of its mimicry of what other species?

Who is Kyle's brother on the TV show "South Park"?

What ended the era of steamboats on the Mississippi River during the 1870s?

Who performed the 1977 song "Let's All Chant"?