task 3

Task 3

Water is a essential thing for living all the living species in the earth. It is also believed that the life is originated from the water and therefore the other name of water is “life”. It is a great irony that although 3/4 of the Earth’s surface is covered with water, there is still an acute water crisis in some parts of the world. The problem is due to that 97.5 % of all water is salty ocean water and rest 2.5 % water if fresh water. Among the fresh water, only 30 % is available for use, and consequently only 1 % of all the earth’s water is available for use. Moreover, all the available water is not clean water and it also has competitors.  Roughly one-sixth of the world’s population, about 1 billion people, do not have access to pure drinking water. Some 2.3 million people in developing countries, most of them are children; suffer every year due to the diseases associated with the lack of access to pure water.
In pace with the development, the use of water also increasing very rapidly, at instance the use of water is almost double in 2000 than the water used in 1960. The causes for increasing of water use are population growth, rapid urbanization, change of consumption pattern, climate change etc. The water distribution is not uniform around the globe; some parts suffer more scarcity than others. Particularly, North Africa and Middle East suffer more water crisis due the unavailability of the underground water in the swallow depth. In South Asia on the other hand, though the water is available in comparatively swallow depth but Arsenic contamination in water is causing the water unsafe.
Another regional water  issue is that the countries which are situated in the down stream of the common rivers is suffering from the discrimination by the upstream countries when they build  DAM, Barrage etc for electricity production and irrigation. A real example of this phenomenon is Bangladesh that suffers droughts and floods due to construction of Farakka barrage on Ganga River.