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.

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Table 9.2 Typical life cycle inventory data from input-output models [2]. Flow CO₂ to air (kg/$) Cropland (m²yr/S) Wheat, corn, Electricity Gasoline etc. Couriers etc. (1111b0) (221100) (324110) 6.27E+00 5.03E-01 1.28E+00 1.19E+01 Benzene to air 2.20E-05 (kg/$) Glyphosate to 2.95E-05 water (kg/$) Groundwater 3.71E-01 (m³/$) 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