Diversity

• Indigenous

  Species that occur naturally in a region.
• Alien Species

  Species that do not occur naturally in a region, but have been introduced to the region from another region.
• Endemic Species


  Species that occur in only one region and no where else.
• Species diversity


  The variety of species
• Genetic Diversity

  Genetic variety within a species.
• Ecosystem Diversity

  Variety of ecosystems that occur in an area.
• 6th Mass Extinction

  Caused by the negative impact of humans.
• Human Impacts on biodiversity.

  • Agriculture
  • Mining
  • Deforestation
  • Urbanisation
  • Poaching
• Value of Retaining Biodiversity 


  Eco-Tourism

  • Sustains tourism potential as the industry creates jobs.
  • High biodiversity can provide aesthetic value for human enjoyment.

  Air Quality

  • Plants purify air & regulate CO2/O2

  Prevent Natural Disasters

  • Forest protect land from erosion & nutrients loss through the binding of roots.
  • Ecosystems absorb excess water, reducing flood damage.

  Food & Health

  • Plants provide many foods & medicine.
• Adventitious


  Develop from any part organ except another root.
• Lateral

  Develops out of other roots.