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Water Resources

Water Resources. WATER RESOURCES. Earth is known as the Blue Planet 70 percent of the Earth is covered with water Saltwater cannot be used for agriculture. Water Supply. Precipitation Climate change Pollution Change in the use of land. Factors Affecting Water Supply.

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Water Resources

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  1. Water Resources WATER RESOURCES

  2. Earth is known as the Blue Planet • 70 percent of the Earth is covered with water • Saltwater cannot be used for agriculture Water Supply

  3. Precipitation • Climate change • Pollution • Change in the use of land Factors Affecting Water Supply

  4. Unevenly distribution of precipitation throughout the world • Relation between level of precipitation and availability of freshwater Precipitations

  5. Mean Global Annual Precipitation

  6. Availability of fresh water in the world

  7. High temperature means increased evaporation, leading to precipitation • Frequent floods and droughts • Lower soil moisture Climate change

  8. DID YOU KNOW? Watermelons were the first water jugs or containers. Africans carried them across the hot deserts so they would always have a drink handy.

  9. Supply of freshwater is reduced by water pollution. • Waste in the form of rubbish and sewage. • Pollution from power plants, factories and mining activities. • Chemicals used in agriculture are washed away in the rivers. • Water scarcity in developing countries. Pollution

  10. Deforestation leads to more floods • Minerals are lost from the water Desertification Evapotranspiration Change in the use of land

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