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Tuataras have a "third eye" that is "no longer" used for vision. Was it earlier in evolution? Are there creatures with 3 functional eyes in the fossil record?

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How long did it take for homo sapiens to diverge into different races of such markedly different physical appearance?

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If there was a stable tunnel straight through the earth, passing directly through the center, and you fell into it, what would happen?

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If falling from a plane toward the ocean without a parachute, what could serve as an alternative that might save your life?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Tuataras have a "third eye" that is "no longer" used for vision. Was it earlier in evolution? Are there creatures with 3 functional eyes in the fossil record?	3763
How long did it take for homo sapiens to diverge into different races of such markedly different physical appearance?	1
If there was a stable tunnel straight through the earth, passing directly through the center, and you fell into it, what would happen?	1
If falling from a plane toward the ocean without a parachute, what could serve as an alternative that might save your life?	1