Layers of soil are known as what?

More Questions:

Mile High Stadium in Denver was built in 1948 and was then known by what name?

What was the name of the world's first nuclear submarine?

What other South American country, besides Venezuela, is a member of OPEC?

'St. Vitus's Dance" is what?

Christmas Island is a territory belonging to which country?

Where do people traditionally dance the flamenco?

In which English county is Charnwood Forest located?

What are the four southernmost states that border Nebraska?

What 60’s TV series featured the three Bradley daughters, Betty Jo, Billie Jo, and Bobbie Jo?

Who created the TV show "Jeeves and Wooster"?

In what city did Ann Romano raise her two daughters on the show "One Day at a Time"?

What French detective features in the "Pink Panther" movies?

Off of which European coastline was the "Battle of Trafalgar" fought?

Which chemical element gets its name from the Greek for "Violet-colored"?

Who directed the 1999 film "American Beauty"?