competition and interdependence:

• Habitat


  The environment in which an organism lives
• Population


  The total number of organisms of the same species living in the same geographical area
• Community


  The populations of all of the different species that live in the same habitat
• Biotic


  The living part of an environment
• Abiotic


  The non-living part of an environment
• Ecosystem


  Both the biotic and abiotic parts of an environment and how they interact
• Resources organisms compete for

  • Light
  • Space
  • Water
  • Mineral ions
  • Food
  • Mating partners
  • Territory
• Interdependence


  How different species in a community depend on each other
• A species disappears from a community


  Can affect the whole community
• Stable community


  A community where the populations of organisms are in balance with each other and with the abiotic resources