they are broken down it steps to make it easier to understand

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  • Created by: Nadia
  • Created on: 20-10-12 09:44


There are 6 steps for eutrophication...

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step 1

If farmers use too much fertiliser,or rain washes it away, it travels into the stream/ river ect. 

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Step 2

High nitrate and phosphate concentration in the water encourages rapid growth of algae.

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Step 3

These block sunlight, and plant start to die due to competition for light.

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Step 4

Micro-organism numbers increase as they feed on dead material.

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Step 5

Microbes use up all the oxygen which means that the oxygen concentration in the water decreases.

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Step 6

Fish and other animals suffocate and die due to lack of oxygen.

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Great! Just what I was looking for!



Thank you! 

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