Fichas
C2: Fertilisers (eutrophication)
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- 1Step 1Fertilisers are washed off fields, and into ponds, lakes and rivers.
- 2Step 2The fertilisers in the water increase the nitrate and phosphate levels in the water.
- 3Step 3Algae now goes quickly on the surface of the water due to the presence of theses chemicals.
- 4Step 4The algae blocks of the sunlight to other plants, so they now die.
- 5Step 5Aerobic bacteria use up all the oxygen in the water and feed on the dead plants. Most living organisms die.
Información
- Descripción
- All information is sourced from the Collins revision textbook, GCSE OCR Gateway B Higher.
- Creado por
- Ella Maggs · abr 2016
- Actualizado
- 21 nov 2016
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