Distribution of Organisms


Distribution of Organisms

Organisms live in different places as the environment is varied

  • habitats = the place where an organism lives
  • distribution of an organism is where it is found 
  • an organism is affected by environmental factors depending on where it is found:
    • temperature
    • availability of water
    • availability of oxygen and carbon dioxide
    • availability of nutrients
    • amount of light
  • an organism might be more common in one area due to differences in environmental factors


  • these measure the distribution of an organism 
  • place a quadrat on a random place on the ground, count all organisms in the quadrat and repeat the steps, work out a mean number of organisms per quadrat in the first area
  • repeat the same steps for another area, then compare the two means
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