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Ch. 15, sec. 3

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Ch. 15, sec. 3

  1. 1. Human – Environment Interaction Chapter 15, section 3
  2. 2. The Shrinking Aral Sea Between 1960 and present, Aral Sea lost 80% of its water  Receives water from Amu Darya and Syr Darya rivers  Irrigation diverted so much water from the rivers that very little emptied into the lake and it began to disappear
  3. 3. Aral Sea 1985 Aral Sea 2003
  4. 4. The Shrinking Aral Sea Pesticides and fertilizers are running off into the streams and rivers that feed the Aral Sea  All 24 native species have been destroyed Windstorms picked up the chemicals and salt from the receding shores and carried them to populated areas which has caused diseases
  5. 5. Siberia Population of 32 million in Siberia Some of the most variable temperatures on earth  -90˚ F to 94˚ F
  6. 6. Siberia Temperatures drop so low that basic human functions become painful Permafrost makes building difficult
  7. 7. Siberia When ice and snow melt, standing water becomes breeding ground for mosquitoes and black flies
  8. 8. War and “General Winter” Napoleon marched on Russia in 1812 When he reached Moscow, winter was coming and the Russians burned Moscow before Napoleon got there
  9. 9. War and “General Winter” They retreated back to Poland but lost 90% of his army on the way
  10. 10. Crossing the “Wild East” In the 19th century, travel in Siberia was dangerous Alexander III ordered work to begin on the Trans-Siberian Railroad
  11. 11. Trans-Siberian Railroad Links Moscow to Vladivostok Covered more than 5700 miles and crossed 7 time zones
  12. 12. Trans-Siberian Railroad From 1891 – 1903, 70,000 workers moved 77 million cubic feet of earth, cleared >100,000 acres of forest and built bridges over several major rivers
  13. 13. Resource Wealth in Siberia Wanted to populate Siberia through the RR By 1904, 5 million settlers moved to Siberia Discovered large amounts of coal and iron ore

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