A phyloGENETIC tree is not the same thing as a taxonomic tree, which is what Cal described. rRNA and molecular studies are used in phylogenetics to determine relations between species.
1 As the light intensity increases, the rate of photosynthesis increases. 2  However, the rate will not increase beyond a certain level of light intensity. 3  At high light intensities the rate becomes constant, even with further increases in light intensity, there are no increases in the rate.
with light, less sun= less photosynthesis, more sun= more photosynthesis. This â¦is because there is a 'light dependant reaction' as part of photosynthesis, and therefore photosynthesis can only happen when there is enough light. CO2 is needed for photosynthesis. The more co2, the faster the rate of photosynthesis. Increasing the Temperature increases the rate. This is because there are enzymes in the process of photosynthesis, and with enzymes, the rate increases with temperature (up to a point, when it is too hot for the enzymes to work).