Question

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.

ICEVs only
EVs only
Both ICEVs and EVs
CO2 emitted by burning gasoline per kilometer traveled
CO2 emitted in gathering and building specialized batteries
CO2 emitted by different forms of electricity generation
Number of kilometers a car can travel on a kilowatt-hour of electricity
CO2 emitted in gathering materials to build the car
Number of kilometers driven
CO2 emitted in building the car
CO2 associated with vehicle disposal

Answer 1

The variables used in the life cycle assessment model can be categorized as ICEVs only, EVs only, or both.

Step-by-step explanation:

The variables can be categorized as follows:

• ICEVs only: CO2 emitted by burning gasoline per kilometer traveled, CO2 emitted in gathering and building specialized batteries, CO2 emitted by different forms of electricity generation
• EVs only: Number of kilometers a car can travel on a kilowatt-hour of electricity, CO2 emitted in gathering materials to build the car
• Both ICEVs and EVs: Number of kilometers driven, CO2 emitted in building the car, CO2 associated with vehicle disposal

Answer 2

The variables associated with ICEVs only are CO2 emitted by burning gasoline per kilometer traveled, CO2 emitted in gathering and building specialized batteries, and CO2 emitted by different forms of electricity generation. The variables associated with EVs only are Number of kilometers a car can travel on a kilowatt-hour of electricity, CO2 emitted in gathering materials to build the car, Number of kilometers driven, CO2 emitted in building the car, and CO2 associated with vehicle disposal. The variables associated with both ICEVs and EVs are CO2 emitted in gathering and building specialized batteries and CO2 emitted by different forms of electricity generation.

Step-by-step explanation:

The variables associated with ICEVs only are:

• CO2 emitted by burning gasoline per kilometer traveled
• CO2 emitted in gathering and building specialized batteries
• CO2 emitted by different forms of electricity generation

The variables associated with EVs only are:

• Number of kilometers a car can travel on a kilowatt-hour of electricity
• CO2 emitted in gathering materials to build the car
• Number of kilometers driven
• CO2 emitted in building the car
• CO2 associated with vehicle disposal

The variables associated with both ICEVs and EVs are:

• CO2 emitted in gathering and building specialized batteries
• CO2 emitted by different forms of electricity generation