O4_8_Tiffany_Eutrophication

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  • Nutrient load up: Excessive nutrients from fertilisers are flushed from the land into the river
  • Plants flourish: these pollutants cause aquatic plant growth of algae, duckweed and other plants
  • Algae blooms, oxygen is depleted: Algae blooms, preventing the sunlight from reaching other plants. The plants die and oxygen in the water is depleted
  • Decomposition further depletes oxygen: Dead plants are broken down by bacteria decomposers, using up even more oxygen in the water
  • Death of the ecosystem: Oxygen levels reach a point where no life is possible. Fish and organisms die.
  • Tiffany Ho O4
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