Wetlandsareshallowmarinewatersandwetareasincludingrivers,lakesandmarshes.Accordingtoscientists,evenreservoirsandpaddyfieldsfallintothecategory.Wetlandsareclassifiedintoover40typesbutaccountsforonly6%oftheearth'stotallandarea.Humanbeingsinhabitbywaterandgrassbecausewetlandsprovideuswithwaterandwetsoil.