Introduction to ecology

  • define the terms ‘population’, ‘community’, ‘habitat’, ‘niche’, ‘ecosystem’ and ‘biome’
  • describe the levels of organisation of organisms in ecology from pupulations to biomes
  • describe the factors which can cause a population size to vary, including:
    • the effect of abiotic factors
    • interactions between organisms: interspecifc and intraspecific competition and predation