2. solar system 1. is elliptical
Energy input would be what's giving the source energy. Energy output is what energy it's giving out.
Cellular respiration and photosynthesis are essentially opposite processes. Photosynthesis is the process by which organisms make high-energy compounds -- the sugar glucose in particular -- through the chemical "reduction" of carbon dioxide (CO2). Cellular respiration, on the other hand, involves the breakdown of glucose and other compounds through chemical "oxidation." Photosynthesis consumes CO2 and produces oxygen. Cellular respiration consumes oxygen and produces CO2.
Scientists so far haven’t managed to figure that out .
They are located in the liver the wall of the sinusoids.