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23 December, 06:48

The diameter of a human hair is about how many times the diameter of a single pollen grain?

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  1. 23 December, 07:09
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    The diameter of a human hair is more than 1000 times the diameter of a single pollen grain. Pollen grains of pines, firs, and spruces are winged. The smallest pollen grain, that of the forget-me-not (Myosotis spp.), is around 6 µm (0.006 mm) in diameter. Wind-borne pollen grains can be as large as about 90â€"100 µm.
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