Phylogenetic
Scientist use a phylogenetic tree to track the evolutionary history of a species.
The sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc. photosyntesis is the process of making food which needs sun,water,nutrients etc.
The answer is the Ribosomes of mitochondria and plastids are very similar in their structure and function to bacterial ribosomes.Mitochondria, chloroplasts, and bacteria are alike in size. Bacteria also have DNA and ribosomes alike to those of mitochondria and chloroplasts. Based on this and other proof, experts ponder host cells and bacteria shaped endosymbiotic relationships precedent, when separate host cells took in oxygen-using and photosynthetic bacteria but did not put an end to them.
I think it is NAD, this ensures that the NAD can go back to glycolysis where it can again be reduced and go back through anaerobic respiration.