Competition

• Define 'Community'

  The population of different species living in a habitat
• Define 'Ecosystem'

  The interaction of a community of living organisms
• What are the 4 things that plants compete for?

  • Light
  • Water
  • Space
  • Mineral ions
• What are the 4 things that animals compete for?

  • Space (Territory)
  • Food
  • Water
  • Mates
• Define 'Interdependence'

  When each species depend on each other for e.g food, shelter and pollination
• Define 'Stable Community'

  When all the species and environmental factors are in balance so that the population sizes are roughly constant
• State 2 examples of stable communities:

  • Tropical rainforests
  • Ancient oak woodlands
• Define 'extremophiles'

  Organisms that live in extreme environments, such as at high temperatures, pressure or salt concentration
• Give an example of an extremophile

  Bacteria living in deep sea vents