Definition+paragraph+2.26.2013

==According to The American Cultural Dictionary, water pollution is The addition of harmful chemicals to natural water, but this defintion not makes water pollution really is. Water covers over 70% of the Earth’s surface and is a very important resource for people and the environment. Water pollution affects drinking water, rivers, lakes and oceans all over the world. Water pollution including(includes) industrial waste, oil pollution, marine dumping and so on.==

==Have you ever thought about what makes water pollution or do you know what is the cause of water pollution? The water pollution by master can describes main cause. [there are many causes of water pollution] The first is industry water. Many industrial facilities use freshwater to carry away waste into natural water. All of the waste is harmful chemicals. The second cause of water pollution is oil from spills and ships. Oil spills make up about 12% of the oil goes into the ocean. The other comes from shipping travel, drains and dumping. The third cause of water pollution is marine dumping. When some people travel by ships, they always dump litter in sea such as paper, plastic bottles and so on. This is a huge problem. These reasons cause water pollution in our life.==

==All types of water pollution are harmful to the health of humans and animals. First, the effect of industry pollution is heavy metals from industrial water pollution.These are toxic to marine life such as fish, and the humans who eat them. The people will easily get cancer. Second, oil cannot dissolve in water and is hard to clean up. This suffocates fish and bird. This can be catastrophic to local marine wildlife and humans' bodies get unhealthy. Third, the effect of marine dumping is that litter is very harmful to people and the environment. It will take long time to degrade in water such as plastic bottles, whic take 400 years to degrade.These effect told us we should protect our enviroment.==

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