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Download Tuesday 13th May 2014 What is eutrophication?
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Transcript
What is eutrophication? Match up the chemical with the use: Fertiliser Kills any weeds in the area so the plant can grow without competing for water. Herbicide Provides a source of nutrients to help the plant grow. Pesticide/ insecticide Kills insects that might feed on the plant and damage its growth and appearance. The problem with farmers using these chemicals Fertilisers are washed off the land by rain and end up in ponds or rivers Water plants grow rapidly Water plants prevent light reaching the plants at the bottom Bacteria use up all oxygen in water. Other pond life dies Bottom plants die and are decomposed by bacteria Choose your own task! Write a letter to a farmer explaining the effect their chemicals are having on the nearby lake. Produce a story board/comic strip explaining the process of eutrophication Write a news article on how eutrophication is effecting the environment and what could be done to prevent the damage. Write a letter to a farmer • Explain to the farmer what effect the fertilizers they are using on their crops are having on the nearby lake. • Describe what is eutrophication? • Empathise with the farmer by explaining why you think they need to use the fertilizers. The process of eutrophication Eutrophication news article • Explain how eutrophication has become a major problem for the environment now. • Give a example of the effects of eutrophication. • Explain how the increasing population has lead to farmers using more fertilizers. • Suggest a way we can reduce the damage on the environment.