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DROUGHT Droughts can be meteorological – defined as the dryness and duration of the dry season; agricultural – mainly affecting food production and farming; hydrological – associated with the effects of low levels of precipitation on the water supply; and socio-economic – occurring when the demand for an economic good exceeds supply, due to weather-related water shortages (Pakistan Meteorological Department). 1.      Causes of drought in Thar Are Lack of rainfall (or precipitation), also surface waters has dry out due to the flow from their sources upstream is affected. Human factors : cutting down trees ( deforestation ) in the name of economics, has exposed surface water to more evaporation. It has also reduced the ability of the ground to hold water and make it easier for desertification to occur. Economic Survey of Pakistan, the drought is the cause of over Growth and Global warming is another important factor that had caused drought in Thar.   UNO Pakistan has a

hurricanes/tropical cyclone  Tropical cyclone/hurricane  is a rotating storm in the tropical ocean with the speed of 32 meter per second.  Hurricane/cyclones are rapidly moving storm system revolving around low pressure center as known as eye They can effect large regions , are mostly in  100-2000km in diameter Time period                       A life span of tropical cyclone is on average 6 to 9 day but it can vary from hours to 3 to 4 week . Known by different names                                                    Tropical cyclone are know by different names in in different regions the most commonly  known as hurricanes in the Atlantic and Caribbean, typhoons in the West pacific ( china , Japan ,Philippine and cyclones in the South Indian Oceans or Arabian sea. Cyclones are born in hot or humid environment of tropics eg. June to August in Caribbean and November to April in south pacific. How hurricanes produce                                              W