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Why Do We Have An Internal Skeleton?
If you think about it, skeletons aren't awesome. Instead of the super strong shells or exoskeletons so many other animals have, we have these internal skeletons. That leaves or fragile bodies highly vulnerable to all kinds of serious injury. But as Trace explains, our internal skeletons are actually an evolutionary advantage.
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Why Do We Have An Internal Skeleton?
If you think about it, skeletons aren't awesome. Instead of the super strong shells or exoskeletons so many other animals have, we have these internal skeletons. That leaves or fragile bodies highly vulnerable to all kinds of serious injury. But as Trace explains, our internal skeletons are actually an evolutionary advantage.
Date: 10/19/13
Views: 181
Video by:  Revision3
 
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