Mr. Lowrie's Science Site
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  • AP Physics C: Mechanics
    • First Week Stuff
    • Chapter 1: Measurement
    • Chapter 2: Motion Along a Straight Line
    • Chapter 3: Vectors
    • Chapter 4: Motion in Two and Three Dimensions
    • Chapter 5: Force and Motion I
    • Chapter 6: Force and Motion II
    • Chapter 7: Kinetic Energy and Work
    • Chapter 8: Potential Energy and Conservation
    • Chapter 9: Center of Mass and Linear Momentum
  • AP Environmental Science
    • First Week Stuff
    • Unit I: Humans and Sustainability: An Overview >
      • Chapter 1: Environmental Problems, Their Causes, and Sustainability
    • Unit II: Science, Ecological Principles, and Sustainability >
      • Chapter 2: Science, Matter, Energy, and Systems
      • Chapter 3: Ecosystems: What are They and How Do They Work?
      • Chapter 4: Biodiversity and Evolution
      • Chapter 5: Biodiversity, Species Interactions, and Population Control
      • Chapter 6: The Human Population and Its Impact
      • Chapter 7: Climate and Biodiversity
      • Chapter 8: Aquatic Biodiversity
    • Unit III: Sustaining Biodiversity >
      • Chapter 9: Sustaining Biodiversity: Saving Species and Ecosystem Services
      • Chapter 10: Sustaining Terrestrial Biodiversity: Saving Ecosystems and Ecosystem Services
      • Chapter 11: Sustaining Aquatic Biodiversity and Ecosystem Services
    • Unit IV: Sustaining Natural Resources >
      • Chapter 12: Food Production and the Environment
      • Chapter 13: Water Resources
      • Chapter 14: Nonrenewable Mineral Resources
      • Chapter 15: Nonrenewable Energy
      • Chapter 16: Energy Efficiency and Renewable Energy
    • Unit V: Sustaining Environmental Quality >
      • Chapter 17: Environmental Hazards and Human Health
      • Chapter 18: Air Pollution
      • Chapter 19: Climate Disruption
      • Chapter 20: Water Pollution
      • Chapter 21: Solid and Hazardous Waste
      • Chapter 22: Urbanization and Sustainability
    • Unit VI: Sustaining Human Societies >
      • Chapter 23: Economics, Environment, and Sustainability
      • Chapter 24: Politics, Environment, and Sustainability
      • Chapter 25: Environmental Worldviews, Ethics, and Sustainability
  • Chemistry
    • First Week Stuff
    • Matter

Section 3:  Land Management and Conservation

Key Terms:
  • overgrazing
  • deforestation
  • reforestation
  • ​wilderness
Main Ideas:
  • Farmland is used to raise crops and livestock.
  • Rangeland is land used primarily for grazing livestock.  Rangeland is easily degraded by overgrazing.
  • Trees are harvested for many purposes.  Deforestation can cause soil erosion and may threaten forest plants and animals with extinction.
  • National lands are used for many purposes, including lumber, mining, and recreation.  Wilderness is national land that is protected from all exploitation for the benefit of future generations. 
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