Carbon Cycle Chemical Reactions Involved: Photosynthesis: Air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a by product. During photosynthesis plants use carbon dioxide and produce oxygen.
Similar to shore power for ships, a ground power unit (GPU) may be used to supply electric power for an aircraft on the ground, to sustain interior lighting, ventilation and other requirements before starting of the main engines or the aircraft auxiliary power unit (APU).
Fuel Pump Relay Products. A small but important part of your car's engine fuel delivery assembly, the fuel pump relay is an electrical component that controls the pump. Also known as a relay switch, this car part turns your fuel pump on and off when you start your vehicle and shut it off.