No it is not . Explanation fossil fuels are not elements
Photosynthesis starts when a photon- a tiny packet of light is absorbing a molecule of chlorophyll.
Cellular respiration is also a catabolic process because it breaks the small molecules from digestion into even smaller ones as ATP is created. These are both very important processes, because ATP is what your cells use to produce body heat, move your muscles, and other essential bodily functions.
