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Davina selected 50 people at random and asked them whether they had watched the documentary on Antarctica on television the previous night. She repeated this survey using the same method three more times.
answered
Oct 18, 2016
Mathematics
middle-school
3
votes
115k
views
How does the steepness of the concentration gradient influence the rate of transport?
answered
Mar 27, 2015
Biology
high-school
6
votes
166k
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