UPPSC 2012 General Studies I Solved Paper

(c) Wetlands are useful for releasing heavy metals through absorption by plants. Wetlands occur where water meets land. They include mangroves, peat lands and marshes, rivers and lakes, deltas,floodplains and flooded forests, rice fields and even coral reefs.Wetlands exist in every country and in every climatic zone, from polar to tropics and from high-altitude to dry regions.