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Horses, zebras, and donkeys are all different species. They are believed to have come from one common ancestor and just become more and more different due to their different environmental conditions. These
answered
Oct 5, 2018
Biology
high-school
6
votes
154k
views
How do you connect the ideas of congruency and rigid motion?
answered
Apr 28, 2018
Mathematics
high-school
4
votes
17.3k
views
How are isotopes defined?
answered
Apr 15, 2018
Chemistry
high-school
2
votes
191k
views
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