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Extremely Hard Science Quiz Even Einstein would scratch his head!
Which of these does not use plasma?
The solid state of water is known as what?
How many times hotter than the sun is a lightning bolt?
Longitudinal waves show areas of compression and what else?
Dione is a moon of which planet?
Encleadus is a moon of which planet?
Yogurt is produced by bacterial fermentation of what?
Dogs' unique relationship with humans mean they are referred to as man's best what?
What percentage of marine fish species inhabit coral reefs?
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Extremely Hard History Quiz, most people score only 3 out of 10.
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We bet you don't know a thing about who invented these things!
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Extremely Hard History Quiz, most people score only 3 out of 10.