For more information, see the weather forecast and our average climate infomation (by month in graphs) below. * Data from nearest weather station: Claremorris, Ireland (97.1 KM). Average minimum and maximum temperature over the year. The monthly mean minimum and maximum daily temperature.
Vitamin A is a group of unsaturated nutritional organic compounds, that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids, and beta-carotene. Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision.itamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the light-absorbing molecule necessary for both low-light (scotopic vision) and color vision.
The Roles of Vitamin A. Vitamin A is much more than just a vitamin that helps you see at night. It is a fat-soluble vitamin that plays a role in immunity, the body's development and maintenance of major organs. Available in two sources, vitamin A is derived from animals and from plants. Vitamin A from animal sources is preformed vitamin A and is active immediately. From plant sources, it is provitamin A â including a group of carotenoids, such as beta-carotene. Beta-carotene is the most common form of provitamin A and in plant foods it must be converted in the body to the active form of vitamin A.