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Slide 1

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Eutrophication…read more

Slide 2

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Eutrophication starts when a farmer puts too much fertiliser on the plants and the
nitrates and phosphates run off onto the nearby lakes and rivers.…read more

Slide 3

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The nitrates and phosphates in the water cause algae to grow on the surface of the
water. This stops the light and oxygen from getting in.…read more

Slide 4

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Once the algae has grown on the surface of the water, light and oxygen supplies are
cut off. This stops the plants under the water from photosynthesising so they all
die.…read more

Slide 5

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As the plants are unable to photosynthesise, they die and then the animals under the
water don't have any food and are getting no oxygen because of the algae on the
surface of the water and so all the organisms in the water die.…read more


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