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0.00273 megatonnes is about 5,500 times as heavy as a Polar Bear
In other words, it's 5,290 times the weight of a Polar Bear, and the weight of a Polar Bear is 0.000189 times that amount.
(Ursus maritimus) (adult, male)
An adult, male polar bear weighs between 0.0000005160 megatonnes. Polar bears are so heavily insulated by their 9.9 cm (3.9 in) layer of blubber that they are often difficult to detect using infrared photography sensors.
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