The Biologian
Biology, religion, and even some eLearning
Showing posts with label
vitamin d
.
Show all posts
Showing posts with label
vitamin d
.
Show all posts
Monday, August 29, 2011
How Do We Tan?
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How does our skin "see" UV light? How does your skin know to get darker? To flush with blood during a sun-burn? If I understa...
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