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Tuvalu is the fourth smallest nation in the world with a population of 11,000. Tuvalu is made up of nine inhabited islands five which are coral atolls and four made of land rising from the seabed. The environmental challenges Tuvalu faces include the impacts if a changing climate increasing sea level rises and weather events, increasing salination.

Invasive alien species on islands have broad impacts across biodiversity, agriculture, economy , health and culture, which tend to be stronger than on contitents.