The graph below shows different sources of air pollutants in Portugal from 2005 to 2020. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line graph illustrates the essential reasons causes air pollution were transport, industry and household in Portugal during 2005 and 2020. Overall, air pollution was caused by industry was the highest of sources in 2005, while transport and household were the lowest pollutant in 2005. However, over a period of 15 years starting from 2005, […]