Resource Depletion and Sustainability

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Resource Depletion and Sustainability

  1. 1. ResourcesWater, Minerals, Agriculture, Forests
  2. 2. Renewable and Non-RenewableRenewable= replaceable/replenishablefreshwater, timberNonrenewable= nonreplaceable/nonreplenishable fossil fuels (oil, coal, natural gas, uranium)
  3. 3. FreshwaterAccess to freshwater depends on site and situation-Canada-20% of world’s fresh water
  4. 4. Freshwater SourcesSurface water= rivers, streams lakes, snowfields, and glaciersAquifer= underground water-bearing rock, sand, or gravel
  5. 5. Surface Water vs. AquiferSurface Water Aquifer• Bacteria • Less bacteria• Harder to access • Easier to access • Recharge slowly
  6. 6. Freshwater IssuesGroundwater depletion= aquifers are being over-pumped water table falls=farmers dig deeper wellsSo what? Digging too deep= Arsenic and fluoride
  7. 7. Solutions?• Water exports• Desalination
  8. 8. Contributors• Industrial pollution• Urbanization• Agricultural practices
  9. 9. Mineral ResourcesMining= strips natural vegetation, rock, soil- Left abandoned and pollutants dumped into environment
  10. 10. Agricultural• Creating farmland= destroying natural habitats• Maintaining farmland= irrigation and fertilization• Farmland Salination= farmlands turn to wastelands• Practices: – Chemicals: pesticides and herbicides – Genetically Modified Foods (in Canada: corn, canola, soybeans, squash, potatoes)
  11. 11. PesticidesPesticides= poison to kill insectsHerbicides= poison to kill unwanted plants- Kill harmless insects- Harm farmworks- Seep into nearby streams***phase-out in Canada
  12. 12. Deforestation-fewer trees= more carbon & poorer air qualityBrazilian Rainforest Case StudyRainforest exploitation= farming, cattle ranching, mining, lumbering- Subsistence farming= farmers given rainforest to develop unsuccessfulDeforestation= dry, arid wastelands- flooding, clogged reservoirs
  13. 13. DeforestationCanada’s Forests¼ of world’s temperate, deciduous coastal forest1/3 of the world’s boreal coniferous forestAlmost all of the world’s old growth pine- Forest fires, industrial development, loggingEnvironmental stewardship= effective management of resources, sustainable practices
  14. 14. Government Response• governments helping to clean-up and protect environment• Canada- national, provincial, regional lawsSO WHAT??

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