biodiversity and eutrophication

• Biodiversity

  • a variety of different species of organisms on earth or in an ecosystem
• Humans decreased biodiversity by:

  • habitat destruction
  • pollution
  • waste

  results - less food, less shelter so plants and animals become extinct
• Measures put in place to conserve biodiversity

  • protecting a regenerating habitats - E.g. eg national park status
  • governments are trying to reduce carbon footprints
  • massive drive of recycling
  • captive breading programs for endangered species tto later be released into the wild
• Eutrophication

  1. a pond containing fish and plants
  2. aquatic plants use the sun to photosynthesis and produce oxygen which is dissolved into the water and used by the fishes to survive
  3. fertilisers (that encourage the growth of plants) put in land are put into the water when it rains
  4. this causes Algea to colonise the surface of the pond
  5. this prevents plants below to photosynthesise as they cannot access sun light
  6. plants die and no longer release oxygen
  7. fish now do not have the oxygen they need and also die