LOCATION: Taiga, also known as coniferous or boreal forest, is the largest terrestrial biome on earth. It extends in a broad band across North America, Europe, and Asia to the southern border of the arctic tundra.OCATION: Taiga, also known as coniferous or boreal forest, is the largest terrestrial biome on earth. It extends in a broad band across North America, Europe, and Asia to the southern border of the arctic tundra.
Xerophthalmia is a medical condition in which the eye film is reduced and the eye is incapable of producing tears.This appears when there is something wrong with the lacrimal glands and their main function, meaning to produce tears, is affected.erophthalmia is also known as the dry eye syndrome or conjunctivitis arida and it can affect the quality of life to an extensive level.
It may be caused by a deficiency in vitamin A and is sometimes used to describe that lack, although there may be other causes. Xerophthalmia caused by a severe vitamin A deficiency is described by pathologic dryness of the conjunctiva and cornea.The conjunctiva becomes dry, thick and wrinkled.t may be caused by a deficiency in vitamin A and is sometimes used to describe that lack, although there may be other causes. Xerophthalmia caused by a severe vitamin A deficiency is described by pathologic dryness of the conjunctiva and cornea.