#scienceknowledgefact

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rahat097

scienceknowledgefact

9y

>>> Amazing Facts about the Human Body That We Never Knew

>>> Amazing Facts about the Human Body That We Never Knew

1 . The number of bacteria in a person’s mouth is equal to the number of people living on Earth, or even more. 2. The speed of an incoming brain impulse is about 400 km/h . 3.

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