1、1 2 All about Water pollution2.influence3.solution1.Cause3 Nowadays,water pollution is deteriorating.Rivers,lakes and even oceans all over the world are becoming polluted by garbage and dangerous chemicals.Oil and other Chemicals can kill fish and make water unsafe for drinking.Before we think about
2、 what should we do to solve this problem,we should first know what cause the problem.Cause41.Natural pollution Due to the dissolution of geological,atmospheric precipitation leaching,erosion on the ground,mix the various pollutants into the water 因地质的溶解作用，降水对大气的淋洗、对地面的冲刷，挟带各种污染物流入水体而形 成52.Man-made p
3、ollution1.industrial wastewater(工业废水)2.Daily life sewage(生活污水)3.Pesticide and fertilizer pollution（农业化肥污染）These do damage to the quality of water.BACK67 Water pollution is one of the most serious problems that mankind faces today.1.For business or industry,it affects products quality,increased corro
4、sion of products,and so on.2.For individual,it does damage to the humans healthy.There are many influence that we cant describe them by words.So I will show you some pictures.Influence89Discharging sewage into water10Water hyacinth水葫芦11 Red tide reasons of form red tideWater eutrophicationMeteorolog
5、ical and hydrological and physical and chemical properties of the sea Damages of red tideDamage Harm to human s healthDestruction of Marine fishery resources and aquatic productsHarm to human health12The garbage in water13Back1415 Everyone wants to reduce pollution.But the pollution problem is as co
6、mplicated as it is serious.What should we do to solve this problem Gradually?Solution16For government1To establish the urban sewage treatment system (城市污水处理系统的建立)2 To restructur the Industrial（调整产业结构）3.To develop the new water sources4.To strengthen the planning and management of water resources5.To
7、 control the agricultural non-point source pollution （控制农业面源污染）17For Business1.To reduce water consumption(减少耗水减少耗水量量)2.To buy equipment of sewage treatment (买污水处理设备买污水处理设备)3.Dont discharge sewage into water.(不要乱排污水不要乱排污水)4.To estiblish the water recycling system18For individual1.Dont use cleaner conclude Pollution.2.Dont throw the garbage into the river or sea.3.Tell the person around you to protect the water1920 21 22 23 24 25 26 If everyone can make a contribute to preserving water resources,I believe that our world will become more and more beautiful!Thank you!27
