Communities

• state the levels of organisation in an ecosystem

  individual, population, community, ecosystem
• what is an ecosystem?

  interaction between the living components and non-living components
• state the factors that plants may compete for

  • light
  • space
  • water
  • mineral ions from soil
• factors that animals may compete for

  • food
  • mates
  • territory
• what is infraspecific competition?

  competition within a species
• what is interspecific competition?

  competition between different species
• what is interdependence?

  different species in an ecosystem depend on each other for various resources, if 1 species is removed, the whole community may be affected
• what is a stable community?

  community in which all the biotic factors and all abiotic factors are balanced so that population sizes remain relatively constant