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  • 1. Launch Give an explanation to what is happening in the above graph that shows a cow population? (where the arrow points)
  • 2. Catalyst Review
    • Remember that if a population goes over the carrying capacity there are not enough resources to support it
    • What happened in this case was that there were too many cows which ended up eating ALL the grass and not allowing enough to regrow so the population actually declined below the carrying capacity.
  • 3. A look ahead:
    • Wednesday- half day
    • Friday- Review/Reteaching
    • Next Monday- Review
    • Next Tuesday is the Unit Exam- start studying now!
  • 4.
    • Producer- makes their own energy
      • Tree
    • Herbivore- Eats only plants for energy
      • Deer
    • Carnivore- Eats only animals for energy
      • Frog
    • Omnivore- Eats plants and animals for energy
      • Human
  • 5. Animal Diet Game
    • http://www.sheppardsoftware.com/content/animals/kidscorner/games/animaldietgame.htm
  • 6. General Fact
    • In a food pyramid, the shape of the pyramid tells you the different amounts of energy
  • 7. General Fact
    • Humans, as a whole, have a far greater impact on their environment than most species
  • 8. Why?
    • Use more resources than most organisms
  • 9. Problems
    • Global Warming
    • Greenhouse effect
    • Depletion of the Ozone layer
    • Killing of harmless plants and animals through pesticides
    • Deforestation
    • Using up non-renewable resources
  • 10. Criteria for negative effects on the environment
    • Uses non-renewable resources
    • Drastically alters the ecosystem, environment and cycles
    • Can lead to species displacement
  • 11. Criteria for positive effects on the environment
    • Uses renewable resources
    • Does not drastically affect the environment
    • Recyclable, reusable
    • Maintains the desired ecosystem interactions
    • Does not disrupt cycles
  • 12. Examples
    • Nitrogen Cycle
    • Food Web
    • Pesticides