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What’s the Big Deal About Water?

What’s the Big Deal About Water?. Bakari Mwanga. Is a glass of water valuable?. A plastic bottle of water costs about $0.20 An adequate and continuous supply of clean water is needed for drinking, sewage and waste systems along with plant irrigation. Water is essential to life.

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What’s the Big Deal About Water?

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  1. What’s the Big Deal About Water? Bakari Mwanga

  2. Is a glass of water valuable? A plastic bottle of water costs about $0.20 An adequate and continuous supply of clean water is needed for drinking, sewage and waste systems along with plant irrigation.

  3. Water is essential to life. “All the water in the ocean is only for the eyes.” Longo of Tanzania “A little rain each day will fill a river to overflowing.” African Proverb “Water is colorless and tasteless, but you can live on it longer than eating food.” African Proverb

  4. Water is essential to life • All physical living organisms that we know of are carbon based and water dependent. Human, plant and animal life depend on water. • The human body is 45% to 60% water. Some marine organisms are up to 95% water.

  5. Water is essential to life • Human beings can live for up to two months without solid food(one documented case 72 days). How long someone can live without solid food is a matter of health condition, body weight, and whether or there is ready access to water. • A person can live for only from 3 to10 days without water. Water is essential for regulating body temperature, moistening the mouth, eyes and nose, bowel movements, carrying nutrition to the cells, lubricating the joints.

  6. What Makes Water So Special? • Unique properties of water make it essential to life. • Only substance on earth that is in liquid form at common surface temperatures. • Because of its property as a powerful solvent, wherever water goes it takes along valuable chemicals, minerals and nutrients. • It expands as it freezes becoming less dense. If the opposite occurred and water became denser as it froze into ice then lakes, rivers and oceans would freeze through solid.

  7. Why is Water Important? • Water is used to irrigate plants. • Water used in power plants to cool down electrical equipment and to turn turbines which then generate electricity.

  8. Where Does All This Water Come From? • About 70% of the earth’s surface is covered with water. • The oceanscontain 96.5%of all water on earth. Sea water has a high salt content which makes it toxic for human consumption.

  9. Where Does All This Water Come From? • Polar Ice Caps/Glaciers/ Permanent Snow 1.74% • Ground Water(Aquifer) 1.7% There is much more water stored in the ground than on the surface. Aquifers provide water in places where surface water is scarce. Water on the ground seeps down to recharge aquifers while water from aquifers seeps out to recharge rivers and lakes. • Surface Water(Rivers/Lakes/Swamps) .029% • The Air (Humidity)

  10. Where does all this Water Come From? • Surface Water (Rivers/Lakes/Swamps) .029% • The Air (Humidity) • Rain (Precipitations – Rain, Snow, Hail, Dew

  11. Homework #1 Write a paragraph (at least five sentences) explaining why water is important. Write out each of the three proverbs given at the beginning of this presentation and give an explanation of each.

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