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).
  the PCM relay is mounted above the PCM in the passenger kick panel, take a flash light and look good ...it should be mounted to the white plastic holder for the compute â¦ r.4 people found this useful.n a 2001 Ford Ranger: In the Power Distribution Box (which is  live ) located in the engine compartment, on the drivers side (the # 54 relay is the relay for the Power â¦ train Control Module / PCM). + 1 other found this useful. Chuck Grantham.