The bottom driver is like the suspension for the sled, resulting in a smoother travel. And yes, the handles for the bottom athlete are significant too. The top man who sees the track signals the man in bottom (mostly using head movement) to help steer.
The two reactions which occur during photosynthesis are light  reaction and dark reaction. Light reaction takes place only in the  presence of light. Dark reaction can occur â¦ with or without light. 1 person found this useful.
How are photosynthesis and cellular respiration related to each other? Photosynthesis occurs in plants; cellular respiratory occurs in animal life forms. Both processes are used to harvest energy through electron transport. Scientists compare the processes of photosynthesis and respiration by studying the redox reactions present in both processes. Both release energy through the synthesis of ATP. However, redox reactions in photosynthesis and respiration occur in opposite directions.