Part B - Model design: Building a life cycle model A researcher named Tony Hawkins and his colleagues were interested in determining the environmental impacts of ICEVs and EVs. Their goal was to provide consumers with the information they need to make informed decisions. Furthermore, il governments knew the impact ICEVs and EVs had on national CO, omissions, they could enact policies to better regulate CO2 emissions. in order to understand the true CO2 costs and benefits of ICEVs and EVs, Hawkins conducted a product life cycle assessment. A life cycle assessment is a method used to evaluate the environmental impact of a produce the stages of its life from resource extraction to manufacturing, distribution, use, and final disposal. Hawkins evaluated a number of environmental impacts including water toxicity, metal deposition, and more. In this active concentrate on his evaluation of CO2 emissions. Below is a list of variables that Hawkins used in the life cycle assessment model. Sort each of the variables depending on if it is associated with ICEVS, EVs, or both.