How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
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- How often are taste buds replaced?
“Taste buds are replaced about every one to two weeks.”
Reference: National Institutes of Health (NIH)
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An interesting fact about chameleon tongues
A chameleon's tongue is twice the length of its body.
What color is water?
Water is transparent liquid in small amounts but, exhibits a bluish tinge in large quantities. Pure water is odorless and tasteless.