GEF

Unit 3  |  Water Use and Human Water Systems 71 what was predicted based on projections of population and economic growth. If water managers had simply continued to increase supply through infrastructure construction, they would have encouraged water waste and spent money on unnecessary water infrastructure. Encouraging water efficiency means that towns and cities save money on avoided construction and main- tenance and also protect valuable water resources. 3.2  ModernWater Infrastructure and Dams Most residents of the developed world are surrounded by water infrastructure that captures, transports, filters, and redistributes water. Investigating the water system and its WATER INFRASTRUCTURE Designed structure created to capture, transport, filter, and redistribute water. WATER SYSTEM An understanding of water as a substance that moves through parts of the Earth as well as human infrastructure. WATCH & LEARN http://bit.ly/2usid0s Watch the video and respond to the questions below. 1. How does the demand for animal products affect the water supply? 2. What are four problems caused by livestock production? 3. Which two macronutrients in soil cannot be manmade? video: Sustainability in Agriculture