可持续发展经济ppt介绍之循环经济讲解environment.pptx

Water Pollution;Key Concepts;Types, Effects, and Sources of Water Pollution;;Sources of Water Pollution;;Sources of water pollution;One of every five people in the world lacks access to safe drinking water. Ninety-five percent of people in developed countries and 74% of people in developing countries have access to clean drinking water. In a warmer world, too much rain and too little rain can increase water pollution. ;Pollution of Freshwater Streams;Oxygen Sag Curve;Water Pollution: Now;Pollution of Lakes;The Great Lakes;;Pollution of Groundwater;Ocean Pollution;Case Study: Chesapeake Bay;Oil Spills;Solutions: Preventing and Reducing Surface Water Pollution;Technological Approach: Septic Systems;Technological Approach: Advanced (Tertiary) Sewage Treatment;Drinking Water Quality;Sustaining Biodiversity;9、有时候读书是一种巧妙地避开思考的方法。8月-218月-21Monday, August 2, 2021 10、阅读一切好书如同和过去最杰出的人谈话。16:58:3316:58:3316:588/2/2021 4:58:33 PM 11、越是没有本领的就越加自命不凡。8月-2116:58:3316:58Aug-2102-Aug-21 12、越是无能的人，越喜欢挑剔别人的错儿。16:58:3316:58:3316:58Monday, August 2, 2021 13、知人者智，自知者明。胜人者有力，自胜者强。8月-218月-2116:58:3316:58:33August 2, 2021 14、意志坚强的人能把世界放在手中像泥块一样任意揉捏。02 八月 20214:58:33 下午16:58:338月-21 15、最具挑战性的挑战莫过于提升自我。。八月 214:58 下午8月-2116:58August 2, 2021 16、业余生活要有意义，不要越轨。2021/8/2 16:58:3316:58:3302 August 2021 17、一个人即使已登上顶峰，也仍要自强不息。4:58:33 下午4:58 下午16:58:338月-21