science

Plan

The initial variable to be considered will be the effect that caffeine and temperature has on the heart beat and if it has a direct or indirect effect on the daphnia's lifespan. If there is enough time to consider a second variable however, the effects of a temperature or alcohol on the daphnia's body system will also be considered alongside the initial variable of caffeine. These will then be slotted into the same graph which will show us how the figure correspond to the results.
In order to conduct a true experiment the following questions must be considered and answered and only then can acurate conclusion be drawn.
· How variable is the heart rate in an individual Daphnia?
· How does the drug caffeine affect the daphnia's heart beat?
· At what concentration is the heart rate slowest? The fastest?
· What indication in the graph is the optimum concentration for heart rate of Daphni...