The cause of water pollution.1. Natural water, may be caused by the pollution when in the deficiency of oxygen. Is mainly caused by the increase in the number of rapid plankton and die together when microbes make decomposing plankton make ให์ oxygen in the water is applied. The shortage of. The spoilage potential is another. When the water in the slide no circulation transfer2. Waste water and sewage from the community, including buildings, houses, offices, commercial buildings, hotels, etc., tampered with waste water containing organic compounds which are decomposed by the ย่อยส pattern information. Organic is important, bacteria, which are both aerobic bacteria. As the bacteria that require free oxygen in the decomposition of organic matter.
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