Water Pollution and Eutrophication
- Created by: hannahadams
- Created on: 26-05-15 23:40
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- Water Pollution and Eutrophication
- Water pollution can have a harmful effect on our rivers, lakes and seas
- raw sewage and fertiliser both contain organic materials such as nitrates
- nitrates are needed to form amino acids which are the building blocks of proteins
- in turn, proteins are needed for growth in organisms
- nitrates are needed to form amino acids which are the building blocks of proteins
- run-off of fertiliser or disposal of raw sewage into waterways results in eutrophication
- this leads to death of aquatic life
- raw sewage and fertiliser both contain organic materials such as nitrates
- eutrophicationcan be reduced by:
- better control of fertiliser use - not on land close to water ways
- increasing environmentalawareness of farmers
- more secure storage of farmyard manure and slurry
- Water pollution can have a harmful effect on our rivers, lakes and seas
- addition of nutrients to water from sewage + fertiliser run-off
- leads to increased growth of aquatic plants
- when the plants die they are decomposed by bacteria
- the bacteria use up oxygen in the water
- fish and other animals die without oxygen
- Summary of Eutrophication
- fish and other animals die without oxygen
- the bacteria use up oxygen in the water
- when the plants die they are decomposed by bacteria
- leads to increased growth of aquatic plants
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