What Is It? #14
This lovely little diatom would make a great Christmas ornament, if
only it were larger. It only measures about 25 micrometers (0.025 millimeters)
on a side. Approximately how many of these little glass structures could we fit
on the head of a pin (1.5 mm in diameter)?
A. 750
B. 6500
C. 75,000
D. 650,000
E. 6,575,000
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