The information about some LCI modules is as follows.  

∎ 1 kWh of electricity requires 0.64 kg of water, and the process emits 

∎ 1.12 kg of CO₂, 1.1 x 103 of S02, and 1.97 x 10- kg of NO_x.  

∎ 1 kg of polypropylene requires 31.9 kg of H0, 0.11 kWh of electricity, and the process emits 1.82 kg of CO and 0.0031 kg each of SO₂ and NO_x.  

∎ 1 kg of copper uses 4.38 kg of H₂0 and 0.49 kWh of electricity, and the process emits 0.099 kg of CO and 0.41 kg of SO₂  

∎ 1 kg of steel consumes 0.22 kWh of electricity and 10.47 kg of H₂0, and the process emits 0.074 kg of CO₂.  

∎ 1 kg of plastic extension requires 0.51 kWh of electricity, 4.7 x 10-4 kg of polypropylene, and 19.72 kg of H₂0.  

∎ 1 paper towel dispenser requires a plastic extension that weighs 2.79 kg, 3.19 kg of polypropylene, 43.76 kWh of electricity, 0.17 kg of copper, and 0.17 kg of steel.

Construct a process-model-based life cycle network for producing a paper towel dispenser. Determine the amount of water used and the CO₂ emitted in the life cycle of one paper towel dispenser.