1. Useful functions performed by wetlands are, Many wading birds and water fowl like ergets, herons and ibises nest in wetlands. They act as natural filters and help remove a whole range of pollutants from water such as viruses from sewage works or heavy metals from industrial plants.Both the above
2. A larva called " cavaborus" abounds in this lake and eliminates bacteria in the water, thus contributing to exceptional purity of water. The larvae are found in this Ramsar site Bhoj wetland in M.PDeepor Beel in AssamSastamkotta lake in Kerala
3. The mangroves of Bhittarkanika are famous for rare migratory water birds nesting sites for endangered Olive Ridley turtles prawn cultivation
4. 57% of mangroves in India are found in the East coastWest coastAndaman & Nicobar Islands
5. India has a total of----------------Ramsar sites 19265
6. Gulf of Mannar is a major habitat for the endangered dolphinwhale sharkdugong
7. One of the most important mangrove forests in the world which is both a Ramsar site and a World Heritage site is, SunderbansKeoladeo National Park Both the above
8. The most important factor which will decide the fate of mangroves is, Local enforcement protecting mangrovesPrevention of clogging by crude oil & other pollutantsWorldwide reduction in consumer demand for pond raised shrimps
9. Agriculture and aqua culture have destroyed more than 80% of mangroves in OrissaW.BengalMaharashtra
10. Wetlands of international importance are called International estuariesHeritage sites Ramsar sites