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What three obstacles did dmitri mendeleev face in his life
answered
Mar 10, 2018
Chemistry
high-school
1
vote
191k
views
What human species may have been the first to use crude tools?
answered
Nov 30, 2017
History
high-school
5
votes
46.0k
views
A material's density is the same, no matter how how large or small the sample is, or what shape it is, as long as it is a solid uniform piece of material. Explain how this is possible & use an example.
answered
Jul 5, 2017
History
middle-school
2
votes
182k
views
Cuánto es este problema 3+3x3+3
answered
May 24, 2017
Mathematics
high-school
1
vote
191k
views
Complete the sentence with the appropriate word. The highly organized farmers of the Ohio River Valley were called _________ Builders.
answered
May 13, 2017
History
high-school
1
vote
4.0k
views
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