A bus necessarily emits more CO2 than a car

A bus necessarily emits more

CO2

See Carbon Dioxide

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than a car. 

FALSE 

It is not the size of the vehicle or the number of passengers that matters but the type of engine used. 

If a bus runs on an electric motor or natural gas and a car uses a petrol or

diesel

Diesel is the name of an internal combustion engine that works by compression-ignition, inven...

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internal combustion engine, the bus will emit less CO2 than the car.