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Investigating the effect pollution has on aquatic life - Daphnia Water Flea
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| Submitted: Sun Dec 15 2002
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CATALINA SCHOUTEN 11N MR BENDALL AIM: In this investigation I will be investigating the effect pollution has on aquatic life. In this case I will be using a Daphnia (water flea). I am planning to do this by placing the Daphnia in a petri dish with pond water and I will be adding the pollutant Caffeine. Then I will be measuring its heart rate. Background Information Humans affect the water because of various reasons. One reason is because of untreated sewage in the water. Micro-organisms that break down the sewage use up a lot of oxygen in the water. Pesticides also pollute the water. They are mainly used on farms, so therefor lakes and ponds near farms get polluted regularly. This is because when it rains, the chemicals dissolve and seep into the soil. The chemicals then get into the lakes or rivers. Pollutants also use up oxygen in the water. Therefore living organisms die because of the...
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