Pollution from transport The pie chart shows the amount of carbon dioxide (CO2) produced by different types of transport in a year. 1 Answer the questions with a classmate. a. Which type of transport produces the highest levels of CO₂? b. What percentage of CO, emissions is road transport in general responsible for? Worldwide CO, emissions by transport trains 3% motorbikes 1% buses 4% ships 10.5% planes 11.5% C. Look at the types of road transport. Is most of the pollution because of people or businesses? d. Are there types of road transport that don't produce any CO,? What are they? lorries 28% road transportation cars 42% ​