56% knows the answer to this question: "In addition to mucus, what helps your nose filter out germs and dirt? "

And do you know the answer to this one? "Who sang the famous song "Penny Lane" (1967)"

81% knows the answer to this question: "What is the liquid component of blood known as? "

And do you know the answer to this one? "What is the name for leather with a napped, fuzzy finish?"

89% knows the answer to this question: "Complete the Four Tops hit song title, "Reach Out I'll Be ..."? "

And do you know the answer to this one? "A person might hear reggae, ska, rocksteady, dub, or Bob Marley music from which of these countries?"

36% knows the answer to this question: "The description "birthplace of American freedom" best relates to which landmark? "

And do you know the answer to this one? "What is one of the largest industries in Iceland?"

70% knows the answer to this question: "According to Hindu thinker Kanada, "Weight causes falling; it is imperceptible and known by inference." What phenomenon was he explaining? "

And do you know the answer to this one? "Which of these landforms is an area of land lying between hills or mountains?"

36% knows the answer to this question: "What medical word refers to the heart? "

And do you know the answer to this one? "What medical term is defined as "pertaining to body cavity below diaphragm which contains stomach, intestines, liver, and other organs"?"

95% knows the answer to this question: "... is certain but death and taxes "

And do you know the answer to this one? "Which country's government is communist?"

37% knows the answer to this question: "What is a drug or agent used to decrease the feeling of pain or eliminate the feeling of pain by putting you to sleep called? "

And do you know the answer to this one? "Complete the Dusty Springfield hit song title, "You Don't Have to Say You Love ..."?"

43% knows the answer to this question: "Bono is the singer of what rock group? "

And do you know the answer to this one? "What is 63 divided by 9?"

76% knows the answer to this question: "In what country would you find a 2,021-mile Rabbit-Proof Fence and a 3,300-mile Dingo Fence? "

And do you know the answer to this one? "A 1562 ordinance against public ostentation turned what city's famous gondolas black?"

71% knows the answer to this question: "What river did the Ancient Egyptians build their civilization on? "

And do you know the answer to this one? "What South American country has taken its name from a famous line of latitude?"

93% knows the answer to this question: "Britain's Stonehenge is called a megalith because it is made of what? "

And do you know the answer to this one? "Who was Martin Luther King, Jr.?"