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Jack Downes To investigate the heart rate of Daphnia when added to certain liquids. I will add ethanol to decrease the daphnia's heart rate and use red bull to increase the daphnia's heart rate. I will have to use many different daphnia, obviously, because if I don't the daphnia I use will already be contaminated. I predict that too much, Red bull or too much alcohol will kill the daphnia's. A daphnia is a see through water flea; these small fleas are food for small fish. The daphnia is see through but is too small to be seen by the naked eye, but when under a microscope you can see everything that is working in the daphnia. This is why we will be using daphnia for these experiments, they are seeing through and we can count the heartbeats. Alcohol is a depressant drug and red bull is a stimulant drug, so I predict...

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