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Is 0.00273 megatonnes as heavy as a Grizzly Bear?

It's about 5,000 times as heavy as a Grizzly Bear
The weight of a Grizzly Bear is about 0.0000005210 megatonnes.
(a.k.a. brown bear, a.k.a. silver bear, Ursus arctos horribilis) (Adult, male, coastal area population average)
An adult, male grizzly bear from a coastal area (where food is plentiful) can weigh up to 0.0000005210 megatonnes. In spite of their tremendous size, grizzly bears can run at speeds of up to 55 kph (34 mph).
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