What percentage of air is composed of nitrogen?

More Questions:

What Grand Slam sports event is held at Flushing Meadows, NY?

Which light wood is commonly used for making aeromodels?

According to Exodus, what is the first plague of Egypt?

Which US state is home to the manmade Fort Peck Lake?

What is the only nation that shares a land border with Haiti?

Which US state is the third largest state by land area?

What Greek letter is used to represent electrical resistance?

What is the young offspring of the Antelope called?

What line is missing from some bowdlerized edits of Van Morrison's "Brown Eyed Girl"?

Casey Kasem was the original voice of what cartoon character?

In 1990, Jennifer Aniston played the Jennifer Grey role in a short-lived TV show based on what movie?

Whose directorial debut earned him an Oscar for Ordinary People in 1980?

In 1853, what country sold the US land, in what was known as the Gadsden Purchase?

Where was George A. Custer defeated?

What century poem contains the earliest reference to Robin Hood?