Deserts

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  • Deserts
    • Intro
      • Rainfall?
        • Less than 250mm
      • Soil?
        • Thin and sandy
    • Where are deserts located?
      • 15-30° North and South of the equator
        • Tropic of Cancer (Africa and Asia)
        • Tropic of Capricorn (South Africa and Oceania)
        • Western South America and Southern Africa
      • The Thar Desert
        • North West India to Pakistan
        • The most densely populated desert
        • 200,000km²
    • Adaptations
      • Plants
        • Barrel Cactus
          • Swollen stems store water
          • Waxy coatings - reduce water loss
          • Spikes - shade the cactus and defend from animals
        • Wild Heliotrope
          • Spreads seeds when it rains or before it dies
          • Seeds lay dormant as they have a greater chance of growing later
      • Animals
        • Camel
          • Long eyelashes to keep out sand
          • Can go without water for over a week - drink gallons in one go
        • Fennec Fox
          • Nocturnal - not hot when they are active
          • Go for a long time without water
          • Bat like ears - radiate body heat and regulate temperature
    • Development
      • Opportunities
        • Tourism
        • Farming
        • Energy
        • Mineral Extraction
      • Challenges
        • Extreme Temperatures
        • Water Sources
        • Water Shortage
        • Accessibility
    • Desertification
      • Land degrades and gets turned into desert.
      • Occurs on the borders of existing deserts. (Europe, USA and Australia)
      • Causes
        • Over-Cultivation
        • Population Growth
        • Climate Change
        • Soil Erosion
      • Process
      • Reducing
        • Water Management
        • Tree Planting
        • Soil Management
        • Appropriate Technology

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