Challenging Science Quiz
In 2001, what disease got started with some pigs in Northumberland, England?
Able to point its eyes in separate directions, what iguana uses its chromatophore cells to change color with its moods?
Which of these is not a learned trait?
Which of these is not part of the digestive system?
Yellow diamonds typically have what avian name?
By definition, what birthday have you celebrated if you're a quadragenarian?
The chemical symbol O represents what?
What is often used in advertising signs and produces a bright reddish-orange light?
What force is used to make maglev trains run along their tracks?
Giovanni Schiaparelli described channels he called "canali," leading many to believe that what planet had artificial canals filled with water?
Extremely Hard History Quiz, most people score only 3 out of 10.
Who or what am I?
Who sang these famous pop songs?