Water has a very important role to make the lives of all creatures. It was so when looking for a certain planet, what we are interested first in which the country or not? life exists or not?
Water has a very important role for the daily life of people. Countries maintain life activities as well as production.
Water used for daily activities, water to drink, water to wash food, processed food, water to bathe, to clean ...
Water also is an indispensable factor in production. Water for irrigation for agriculture. Water to cool down the machine for heavy industry, water for cleaning materials for light industry ... Water is a resource for maintaining and developing the economy.
However, present situation of water pollution increasing, many places water is seriously polluted
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