The surface of the dwarf planet Pluto is made largely of what type of frozen gas?

More Questions:

The surrealist poet Leon-Paul Fargue honored which popular French product with the title "les pieds de Dieu"?

In France what is a Framboise?

What is the International Criminal Police Organization better known as?

The shoreline of which US state is broken by Albemarle Sound?

What is the minimum number of sides required to create a Polygon?

What are the four layers of the rainforest?

What does a herpetologist study?

What nutrient is required by the body in order to build up muscles?

Which film features the line, "I could have been a contender"?

What planet was Mork from in the TV show "Mork & Mindy"?

What was the name of the blonde girl in the cartoon show "Scooby-Doo"?

What is the surname of Sesame Street's The Count?

Oswald Cobblepot is better known as who?

Which New Zealand philanthropist was the first to reach the summit of Mount Everest?

In which European country would you find the Tokaj wine region?