Vitamin <u>A</u> is necessary for vision, bone growth, and maintenance of epithelial cells.
We can define vitamins as micronutrients that perform various important functions in the body. Vitamins cannot be synthesized by the body of a person and hence are derived from the diet of a person.
Vitamin A is present in many foods and it is a fat-soluble vitamin. Vitamin A helps the body in various functions such as improving vision, helping the immune system, growth of bones, maintenance of cells etc.
Certain foods contain carotenoids in them. A person's body has the ability to convert these carotenoids into Vitamin A which is then used by the body for various functions. Some preformed sources of Vitamin A include dairy products and eggs.
To learn more about vitamin A, click here:
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The lymphatic system destroy harmful substances 'By producing antibodies'.
The lymphocytes contained in lymphatic organs are produced with other defence cells by the bone marrow. They are then dispersed to eliminate pathogens.
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Climate change is most commonly measured using the average surface temperature of the planet.
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