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Compare The Concentration Of Caffeine In Water

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From the above data, one can see that the greater the concentration of caffeine in the water applied to the Daphnia, the higher the average heart rate in beats per minute of the water flea. For example, at 0% concentration of caffeine the average heart rate of the Daphnia was 165 bets per minute however you can clearly see a difference in heart rate with the Daphnia when placed in a 0.5% caffeinated solution as the average heart rate was 268 beats per minute. An increase of 103 beats per minute on

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