When the skin is exposed to ultraviolet rays, the skin produces a molecule that is turned into Vitamin D.
Sun is the source of ultraviolet rays important for Vitamin D production. Due to this reason, in the case of Vitamin D deficiency, it is recommended by doctor's to absorb sunlight by skin. The Vitamin D production occurs specifically by UV B rays rays which lie in the range of 290-315 nanometer.
The chemical 7-dehydrocholesterol absorbs these rays and convert to previtamin D3. Further, previtamin D3 isomerizes to Vitamin D. Other than sunlight, Vitamin D can be taken through diet. The sources include seafood like fish, fish oil, dairy products, beef liver etc. Vitamin D is required for bone and teeth formation, muscle contraction, immune system etc.
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Answer:
That sucks i remember when i had to do it lol i hated it im srry you have to do it
Explanation:
The answer is red blood cells because they only give your body oxygen and can be the victims of infectious diseases, while all the other choices protect you from it
Answer:
plain folks
Explanation:
"Plain folks" is a form of propaganda and a logical fallacy. A plain folks argument is one in which the speaker presents him or herself as an average Joe — a common person who can understand and empathize with a listener's concerns.
