Hey guys,
So I did a practical about the effect of carbon dioxide concentration on photosynthesis, and we removed the gas from leaves so that they sunk in water. We then placed the leaf samples in solutions with varying sodium hydrogen carbonate concentrations, with light source coming from beneath from an overhead projector and measured the time it took for the leaves to rise to the surface of the solution.
So there was an uneven distribution of light across the overhead projector. Would this be a random error or systematic error? And why?
Thanks a lot. <3
