Which of the following is/are the current problems faced by the Sundarbans, the largest mangrove forest in the world.
- The cyclones that hit the Sundarban once every eight to ten years are now stirring once or twice a year.
- Present river embankments failed to prevent cyclones or tidal surges. As a result, the saline water is flooding the agricultural lands
- The river in the Sunderbans changes its course for different causes lots of time, due to which people have to leave their habitat and farming lands
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