Answers by Ricardo Zea
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Answers by Ricardo Zea

Answers by Ricardo Zea
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The length of time required for half of the radioactive atoms in a sample to decay is its a. half-life. b. relative date. c. radioactive date. d. period
answered Jan 24, 2017
2 votes
140k views
Which list represents the sequence of social positions in the feudal hierarchy (starting from the uppermost tier)?
answered Dec 5, 2016
4 votes
99.5k views
How did the big dipper get it's name?
answered Jun 12, 2016
5 votes
69.0k views
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