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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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Carbohydrates are in place of simple sugars and complex carbs which either are quick energy or stored energy for performance. Without carbs, the body will shut down because you need sufficient energy to keep going. Carbs are what keeps you moving and functioning.
Answer: It has been criticized as being too restrictive by setting a zero level of risk. In fact, it applies only to approximately 400 of the 2,700 substances intentionally added to foods, many of which are GRAS.
Explanation:
Answer:
B. Social environment
Explanation:
It's like when you hang out with people who likes to draw so you end up having drawing as a hobby (example).
Basically, depending on who you're surrounded with, you will end up influenced with or without you noticing it.
