During the process of cellular respiration, carbon dioxide is given off as a waste product. Thiscarbon dioxide can be used by photosynthesizing cells to form new carbohydrates. Also in the process of cellular respiration,oxygen gas is required to serve as an acceptor of electrons.
Energy is the potential for causing changes. Energy helps organisms perform tasks; such as maintaining homeostasis and responding to stimuli. Energy is essential to life because it helps organisms perform essential activities for survival.
