What can happen if the number of individuals of a particular species becomes low?
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Question 2 of 10
Able to point its eyes in separate directions, what iguana uses its chromatophore cells to change color with its moods?
Question 3 of 10
In 1893, Pennsylvania bridge engineer George Ferris built his first eponymous wheel in what "windy city"?
Question 4 of 10
There is a 1-in-1000 chance of this happening before 2200, possibly destroying all human life, but some say there is a 50% chance of it happening on September 24, 2182. What is it?
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Question 5 of 10
Which of these is an important property of the material used to make tights?
Question 6 of 10
What is a front that does not advance called?
Question 7 of 10
Sleeping sickness is caused by the bite of which insect?
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Question 8 of 10
Aard is Afrikaner for "earth." Where would you find aardvarks and aardwolves?
Question 9 of 10
What is the unit defined as the energy needed to raise one gram of water by 1 degree Celsius?
Question 10 of 10
In 1943 the US Supreme Court ruled that it was Nikola Tesla, not Guglielmo Marconi, who invented something. Mind you, Tesla was already dead. What?
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Who Sang Quizzes
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Who sang?
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Strive for a 6 or higher
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15 Mixed Questions
THIS quiz is NOT easy
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Impossible Knowledge Quiz
please tell us if we can give you our thumbs up
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41% knows the answer to this question:
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Math Quizzes
Test Your Math Knowledge
Absolutely nobody scores a solid 10
Average Score: 9
31% knows the answer to this question:
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Math Quiz
Absolutely no one scores higher than a 5
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We hope you can do better than a simple 5
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47% knows the answer to this question:
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We hope you'll score higher than a 3+4
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Challenging Mathematics Quiz
Prove us if you are a true Mathematics Mastermind!
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Math quiz for intelligent people
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Who or what am I?
Literature Quiz
We bet you don't know a thing about who invented these things!