This concept is usually seen in genetics and psychology, where two people/species (often with similar genetic makeup) exhibit different traits if they experience a different environment.
For example, two birds of the same species, may develop into separate species based on where they live their whole lives.
<span>There are 13 vitamins used by the body to maintain health. These are: vitamin A, vitamin C, vitamin D, vitamin E, vitamin K and vitamins B1, B2, B3, B5, B6, B7, B9 B12. Vitamins A, D, E and K are stored in fat, and the others are water soluable. As a result these vitamins must be regularly replaced.</span>
