The line graphs illustrates the numbers (in millions) of vehicle in England and Wales from 2000 to 2020, whereas, the bar graph compares the amount of CO2 emission by four forms of vehicle: cars, buses, vans, and trucks, in the same two regions for three years- 2000, 2010, and 2020.
In England and Wales, the vehicles count has increased drastically over the years, with just 20 millions in 2000 and tripling by 2020 reaching 60 millions. Along with the rise in vehicle population, the carbondioxide emission has also rose.
Cars have the most contribution to air pollution among the four forms of transport, emitting approximately 2.25 in 2010. With the increase in vehicle numbers, the emission also increased to 2.6 in 2010, ultimately ending with 3 in 2020. Buses played the least role in gas production, followed by vans and trucks. The carbondioxide production saw an upward trend along with the increased vehicles. The buses produced less than 0.5 CO2; nonetheless, the vans threw 0.5 in the beginning, first increased to 0.7 and then slightly dropped reaching 0.6. With more number of trucks in 2020, the CO2 amount rose from 0.6 to 1.25.
Overall, it is evident that with more number of vehicles, air pollution is also visible. These trends implicate that the use of cars must be declined and taking the buses must be encouraged to prevent the environmental degradation.