See if you can find the 8 differences in each set of images.
Clovers
A high-resolution scanning electron microscope image of zinc oxide “nano-clovers” synthesized by chemical vapor deposition.
Xin Yin, University of Wisconsin—Madison, USA
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December 2016 answer key
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When the flame goes out
Copper salt residues.
Susan A. Odom, University of Kentucky, USA
Answers will be published in the April 2017 issue.
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