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:
people might think you are crazy and a weird person and might bully you for it or your parents think you do it for attention and maybe you think it is not that big of a deal and you are overreacting.
Explanation:
20-30 percent should be your percentage of daily fat intake average around.
the are 32 bones in the jaw
Explanation:
they are the teeth,
<h3><u>info:</u></h3>
teeth are also bones , when we die we can see that the teeth do not rot like the flesh
<h3>hope it helps you :)</h3>
