Biology, 04.09.2020 14:01, cayden81

To test the effect of red bull on running speed, a group of ten runners drink water before a race and are timed. A day later the same runners drink red bull before the race and are again timed. The times are compared and it turns out that they ran faster after drinking red bull. The running speed is the variable in this experiment.

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To test the effect of red bull on running speed, a group of ten runners drink water before a race an...