Writing task 1. Please help me improve this!

The graph: https://www.facebook.com/ippieltshcmc/posts/gi%E1%BA%A3i-%C4%91%E1%BB%81-writing-task-02-ng%C3%A0y-21072018-band-85-trend-chart-n%C4%83m-2018-l%C3%A0-n%C4%83m-c%E1%BB%A7a-tr/1454317361370084/

The given line graph illustrates the trend of three main factors causing air pollution in the UK during the period from 1990 to 2005.

Overall, it is obvious that total amount of air pollutants went through a plunge over 15 years period, the most rapid reduction was from industrial sources.

There was a sharply drop in the amount of air pollutants from 7 to 4 million tonnes between 1990 and 1999. This figure continued to decrease and almost reached approximately 3 million tonnes by 2005.

About 5,5 million tonnes of air pollutants was accounted by industrial sources in 1990. There was then a decline to 2 million tonnes by the end of the period, with a plummet between 1993 and 1996. In contrast, air pollutants from transport and households was much lower than from industry. Transport’s air pollutants was in constant state around 1 million tonnes in whole period of time. Air pollutants from households slightly decreased by approximate 0.8 million tonnes to 0.1 million tonnes in 2005.