Answer:
having a family history of a certain disease
Explanation:
There is 23 liters of water in the tank with 5750 liters of salt.
The answer is letter C. She
measures the value of economic production and consumption, because Econometrics
is the application of mathematics and statistics to the study of economic and
financial data. It is involved in the study of problems, the analysis of data,
and the development and testing of theories and models.
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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