Eutrophication they are broken down it steps to make it easier to understand 4.0 / 5 based on 4 ratings ? BiologyEcology and Environmental ScienceGCSEEdexcel Created by: NadiaCreated on: 20-10-12 09:44 steps There are 6 steps for eutrophication... 1 of 7 step 1 If farmers use too much fertiliser,or rain washes it away, it travels into the stream/ river ect. 2 of 7 Step 2 High nitrate and phosphate concentration in the water encourages rapid growth of algae. 3 of 7 Step 3 These block sunlight, and plant start to die due to competition for light. 4 of 7 Step 4 Micro-organism numbers increase as they feed on dead material. 5 of 7 Step 5 Microbes use up all the oxygen which means that the oxygen concentration in the water decreases. 6 of 7 Step 6 Fish and other animals suffocate and die due to lack of oxygen. 7 of 7
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