Freshwater Resources 2.1 Fresh water is an essential resource. 2.2

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Presentation transcript:

Freshwater Resources 2.1 Fresh water is an essential resource. 2.2 CHAPTER NEW CHAPTER Freshwater Resources the BIG idea Fresh water is a limited resource and is essential for human society. 2.1 Fresh water is an essential resource. 2.2 Society depends on clean and safe water. 2.3 Water shortages threaten society. CHAPTER OUTLINE

Fresh water is an essential resource. 2.1 Fresh water is an essential resource. Fresh water is essential for life and is used for many human activities. irrigation aquaculture farming dam lock industry transportation and recreation fisheries and aquaculture energy living organisms SECTION OUTLINE

Society depends on clean and safe water. 2.2 Society depends on clean and safe water. Water is treated for safe drinking. concentration sewage system septic system Water is drawn from a river or lake. Water is treated. Water is stored and distributed. point-source pollution nonpoint-source pollution SECTION OUTLINE

Society depends on clean and safe water. 2.2 Society depends on clean and safe water. Water is treated for safe drinking. Pollution can harm the water supply. concentration sewage system septic system point-source pollution nonpoint-source pollution SECTION OUTLINE

Water shortages threaten society. 2.3 Water shortages threaten society. Drought and overuse can cause water shortages. drought desalination Lake Chad has shrunk over the past 30 years. SECTION OUTLINE

Water shortages threaten society. 2.3 Water shortages threaten society. Drought and overuse can cause water shortages. drought Americans use an average of 168 liters per person each day. desalination shower 21% tap 12% bath 9% dish washing 3% toilet leaks 5% toilet flushes 29% washing machine 21% SOURCE: U.S. Environmental Protection Agency SECTION OUTLINE

2.1 Fresh water is an essential resource. I. Fresh water is an essential resource. irrigation A. Fresh water supports life. aquaculture B. Most human activities require water. dam 1. Farming lock 2. Industry 3. Transportation and Recreation 4. Fisheries and Aquaculture 5. Energy C. Dams and other structures alter rivers. KEY CONCEPT SUMMARY

Society depends on clean and safe water. 2.2 Society depends on clean and safe water. II. Society depends on clean and safe water. concentration A. Treatment makes water safe for drinking. sewage system 1. Quality Standards septic system 2. Treatment of Drinking Water point-source pollution B. Wastewater is treated and released. 1. Sewage System nonpoint-source pollution 2. Septic System C. Water pollution comes from many sources. D. Water pollution can be prevented. KEY CONCEPT SUMMARY

Water shortages threaten society. 2.3 Water shortages threaten society. III. Water shortages threaten society. drought A. Water shortages are a global problem. desalination B. Overuse can cause water shortages. C. Fresh water can be conserved. 1. The Need for Conservation 2. Conservation Practices D. People can balance water needs and uses. 1. Shortages 2. Pollution 3. New Sources KEY CONCEPT SUMMARY