Looking back on the past, we can see the beautiful nature without pollution, but currently it technician is different from the past. Progress of technology is increasing, there are more factories to suppliers. Factories every factory will be releasing waste water into rivers, rivers polluted water has odor makes many people trouble some people had no water use. Water is a natural resource that is valuable. Animals and plants. Therefore, we should turn to preserve nature, back, beautiful, as in the past. Therefore it is necessary to help maintain natural water sources are always clean. If you leave a dirt, such as waste or wastewater. It will make the water becomes polluted water at a later time. When the gallbladder becomes a source of waste water will be harmful to the lives of the people. Plants and animals. Not only, but only one area. Lol., foul water treatment, for example, do not leave the garbage down the river wastewater treatment plant, campaigning before dropping down to the river. If you see trash floating in the River, they help keep up the side, leaving a natural back pretty intact.
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