In Science, what does a skull and bones represent?

More Questions:

An Apgar score is given to what?

Burkino Faso is a former colony of which European country?

In the TV show "The Simpsons', how old is Comic Book Guy?

What city was the setting for the TV show "Perfect Strangers"?

What Joyce Maynard novel was made into a 1995 film, starring Nicole Kidman as a murderous TV weatherperson?

What sport is the focus of the movie "Days of Thunder"?

Which UK band had a hit in the 1980's with the song "Sonic Boom Boy"?

Who was the first U.S. billionaire?

Which Italian city did Christopher Columbus claim he was born in?

What was the ultimate destination for most travelers of the Underground Railroad?

Which of Henry VIII's wives was the only one to bear him a legitimate, surviving son?

Which US president lived in La Casa Pacifica?

Whose painting "Irises" was sold to Alan Bond in 1987?

At what temperature is milk with extra-long shelf life sterilized for a few seconds?

What was the name of the train on the TV series "Petticoat Junction"?