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What two types of scientific knowledge can be expressed as mathematical equations
answered
Dec 31, 2016
Physics
middle-school
3
votes
188k
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A substance that releases hydrogen ions in water is a base. a. True b. False
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Sep 14, 2016
Biology
high-school
4
votes
121k
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How did minorities fight for their rights in the 1920's?
answered
Feb 8, 2015
History
high-school
5
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28.2k
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