Band 4+: Task 1: (Line Graph) Differing amount of nitrogen oxide by four types of vehicles.

The line graph gives data about production of the nitrogen oxide emissions by four cars (bus, lorries, petrol and diesel cars)

Overall, while lorries saw considerable an increase, reaching a peak in some years. Moreover, the emissions of buses stood out with higher figures from the first year until the middle year.

First of all, there was a wild fluctuations in terms of petrol and diesel cars. Petrol vehicles emitted 10 gr emission for the environment. Whether these 2 cars increased the speed, the emissions were always the same trend for the atmosphere. Producing the emissions were approximately the same trend in terms of diesel and petrol transports.

Although, buses had a decline at 60 kph, it grew especially at 130 kph. Furthermore, the lorries began with 33 gr at 10 kph, it decreased 25 gr at 130 kph. It showed only 17 gr emissions at 80-90 kph

In summary, The most effective fuels were petrol and diesel. Buses and lorries were also beneficial. But it can be clearly seen that if the speed was higher, the emissions also increased.