Despite its effectiveness in controlling malarial mosquitoes, what controversial chemical vanished from use after Rachel Carson blamed it for killing birds and poisoning people in her 1962 book Silent Spring?
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Question 2 of 10
In 1897 Representative TI Record of Posen County, Indiana, introduced House Bill #246, which fixed the value of what number at 3.23?
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By what name is the bay lynx usually known?
Question 4 of 10
How can you tell a mammoth from a mastodon?
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Question 5 of 10
Before he designed the Saturn V that launched Apollo 11, he was a member of both the Nazi party and the SS, having used slave labor from the Dora concentration camp. Who?
Question 6 of 10
What was the Avtomat Kalashnikova model 1947 g.?
Question 7 of 10
Humphry Davy discovered this element in 1807 and renamed it twice, which is why the Brits spell it with an I and the Americans don't. What is it?
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Question 8 of 10
Nikola Tesla never patented his ideas, but after Tesla died, the Supreme Court invalidated Marconi's patents and gave Tesla credit for what invention?
Question 9 of 10
Eureka! King Heiro of Syracuse asked Archimedes to figure out if a gold crown was really made of gold. By tradition, what was he doing when he figured out how?
Question 10 of 10
Doctors call it aeroembolism. Some engineers call it caisson disease. What do we usually call it?
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Who Sang Quizzes
Who sang these classic Christmas songs?
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Who sang these songs?
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Songs from the 60s!
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"What country is the homeland of the Danish people?
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Quiz on historical events.
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Play This Geography Quiz Now!
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"Which country lies directly south of Mongolia?
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10 difficult questions about John Denver
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"What was John Denver's birth name?
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Have you ever heard of any of these bands?
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Quiz on Science
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