1、 Water pollution.World Water Distribution.China Water Distribution.v1.The use of sewage and fertilizers contain nutrients such as nitrates and phosphates.v2.The use of silt and other suspended solids,such as soil,washoff plowed fields,construction and logging sites,urban areas,and eroded river banks
2、 when it rains.3.The chemical industry pouring much used water into it.4.Used water in daily life pouring into some river and pollute ground water.Effects of water pollutionvSpread of disease:Drinking polluted water can cause cholera（霍乱）or typhoid（伤寒）infections,along with diarrhea（腹泻）.霍乱霍乱.vAffects
3、organs:The consumption of highly contaminated water can cause injury to the heart and kidneys（肾脏）vHarms the food chain:Toxins within water can harm aquatic（水生的）organisms,thus breaking a link in the food chain.Flooding:The erosion of soil into waterways causes flooding,especially with heavy rainfallv
4、.Birds that get into oil-contaminated water die from exposure to cold water and air due to feather damage.Other animals are affected when they eat dead fish in contaminated streams.vHarms animals:.vThe effects of water pollution are not always immediate.They are not always seen at the point of conta
5、mination.They are sometimes never known by the person responsible for the pollution.However,water pollution has a huge impact on our lives.With knowledge,consideration and preparation,water pollution can be decreased.It doesnt take much effort-just a little thought.solutionsv .vThe governments shoul
6、d enforce the current laws and create even tougher regulations to prevent the continued pollution of water .vThe factories should reduce the emission of waste water ,and seek for new technologies to clean the water.Everyone can dosomething for it.Simple steps like driving hybrid cars and home water.
7、Coolers can reduce water pollution.Support clean agriculture,vthere would no longer be a market for agriculture that is responsible for poisonous runoff,and ground water pollution .Protect the natural wetlands,which canvserve as natures filter and create a natural buffering zone between the water and the land.
