Please answer the following

a) Based on Figure 1 below, what part and what material would you change in order to have the greatest reduction in carbon dioxide emissions for running shoes? b) Using Table 1, does a leather shoe or plastic shoe result in greater total emissions? State any assumptions you make. (For example: Assume that both shoes have plastic laces - laces excluded from calculation) c) Consider only carbon dioxide emissions (Table 1) and determine which shoe has a smaller carbon footprint: [Ignore chemical productions, paper production and transport) cow leather shoe (0.25 kg) with interlining (0.10 kg), plastic laces (0.010 kg) and rubber sole (0.50 kg) EVA shoe (0.10 kg) without interlining, plastic laces (0.010 kg), rubber sole (0.30 kg) and pig leather tongue (0.15 kg) . (A) Other Other (including 6% 4% Socklining 10% (sole packaging) (B) PPG 1% Carbon black 1% Other 12% Polyurethane 34% 00 Upper 41% Thermo plastic Nylon elastomer 6% 4% EVA Gel 10% 3% Trusstic 9% Outsole 9% Dieno rubber 6% Olefin copolymer Polyester 23% Pulp 4% 6% Midsole 11% Table 1. Footprint data for shoe production. ("Water, energy and carbon footprints of a pair of leather shoes" by Zayetzi Rivera Munoz, 2013) Processes Materials (1kg) Footprints for one kg of materials Resource use Emissions Energy (M) Water (L) CO2 (KB) CH4 (Kg) 38.15202 59.64086 22.28644 0.12472 N20 (kg) 0.00609 Fabric and Textile production interlining EVA Plastic production Laces Cow leather production Cow leather Pig leather production Pig leather Glue Chemicals production Solvents Rubber production Sole Paper production Paper Transport 1 Km (incl. Fuel cons.) Total 0.91011 5.89354 1.29956 0.00064 n.d. 0.48776 2.03828 44.99664 3.51116 32.78203 8.44350 n.d. n.d. 1.66894 6.63273 6.17530 1.81552 5.46984 0.12280 0.00512 0.78360 1.87301 2.45643 2.85803 0.01199 0.00808 9.28E-08 0.00031 5.21E-05 0.01292 0.00750 0.00172 1.92E-05 1.43E-04 2.58E-06 3.51E-05 2.22E-05 3.11E-04 1.18E-04 9.38E-OS 1.80E-06 1.01E-05 5.07E-05 5.28E-08 2.52E-09 93.77854 118.85452 37.67085 0.16730 0.00683