Khan Academy 62d ago

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! Only about 2.5% of Earth's total water is freshwater, but it is essential for daily life, agriculture, and industry. Most freshwater is used to grow food, while growing populations and pollution put pressure on water availability. Because water resources be used faster than it can be replenished, conserving water and using it wisely helps protect this limited resource. Sections: 00:00 Intro 00:40 How we use freshwater 01:51 Human impacts on freshwater 03:03 Desalination 03:31 How we can conserve freshwater 03:52 Summary ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc ------------------ Credits: “A photograph of a Great Pyrenees and Australian Shepherd mix dog” by Wholthuijzen [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:GreatPyr02.jpg “A photograph of a Great Pyrenees and Australian Shepherd mix dog” by Wholthuijzen [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:GreatPyr03.jpg “De Molen (windmill) and the nuclear power plant cooling tower in Doel, Belgium” by Trougnouf [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:De_Molen_(windmill)_and_the_nuclear_power_plant_cooling_tower_in_Doel,_Belgium_(DSCF3859).jpg “Petroleum extraction in Chihuahuan Desert, Carlsbad, New Mexico, USA” by JYB Devot [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Petroleum_extraction_in_Chihuahuan_Desert_2248-2249mod.jpg “Interprint Decor Paper, Production Arnsberg” by INPRG [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:IP_Production_Decor_Paper_Arnsberg_.jpg “Human population since 1800 with projections of future population” by Bdm25 [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Human_population_since_1800.png “A water faucet” by Temmydolph, licensed under a Creative Commons Attribution License (CC BY-SA 4.0): https://commons.wikimedia.org/wiki/File:A_water_faucet.jpg https://creativecommons.org/licenses/by-sa/4.0/deed.en “View of runoff of sediment from an agricultural field” by Natural Resources Conservation Service - New Mexico, U.S. Department of Agriculture [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Sediment_runoff_NRCS_2016a.jpg “Desalination plant in RAK (Ras Al Khaimah, United Arab Emirates)” by Octal [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Desalination_plant_RAK.jpg “A photograph of a Great Pyrenees and Australian Shepherd mix dog” by Wholthuijzen [public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:GreatPyr01.jpg