Answer the following questions using data from Table 9.2. 

Table 9.2:

1. A company spends $10,000 per year on courier services. Determine the resulting life cycle emission of carbon dioxide and benzene. What type of network model did you use for this calculation? 

2. A household's annual expenses include $1000 for gasoline, $800 for electricity, and $300 for vehicle repair. Determine the cropland needed to support these expenses. Explain which steps of the life cycle may require the cropland most.

Table 9.2 Typical life cycle inventory data from input-output models [2]. Flow CO to air (kg/$) Cropland (myr/S) Wheat, corn, Electricity Gasoline etc. Couriers etc. (1111b0) (221100) (324110) 6.27E+00 5.03E-01 1.28E+00 1.19E+01 Benzene to air 2.20E-05 (kg/$) Glyphosate to 2.95E-05 water (kg/$) Groundwater 3.71E-01 (m/$) 6.24E-03 6.38E-03 1.62E-05 6.14E-05 1.02E-08 1.17E-08 Management Vehicle consulting repair (492000) (541610) (811100) 1.82E-01 9.97E-02 1.53E-01 6.35E-03 2.82E-03 6.63E-03 5.77E-03 8.65E-06 1.75E-06 0.86E-09 1.04E-08 1.03E-03 7.12E-04 5.35E-03 2.09E-06 8.05E-09 9.98E-04