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Material Thickness Embodied Energy Carbon Foot Print: (mm) (MJ/kg) (kg CO2/kg) 2.5 64.8 1.5 Density (kg/m3) 1380 PET (plastic) Glass 3 12.7 0.3 2500 A

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Material Thickness Embodied Energy Carbon Foot Print: (mm) (MJ/kg) (kg CO2/kg) 2.5 64.8 1.5 Density (kg/m3) 1380 PET (plastic) Glass 3 12.7 0.3 2500 A sustainability study is carried out to see what would be the better material to construct a water bottle. a. (4 marks) Based on the information in the table, compare the embodied energy and carbon footprint of the 2 materials above if they are used to construct the water bottle assuming it will use the same amount of materials (surface area). Comment on the comparison between the two materials. b. (2 marks) State your choice of material and explain why you choose the material from sustainability and practicality point of view

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