The line graph provides a comparative analysis of air pollutants from three specific sources in the United Kingdom over a designated period.
It illustrates that industries produced the highest amount of toxins, measured in million tons, although this figure saw a rapid decline over time. In contrast, outflows from transportation increased sharply, eventually reaching a peak level, whereas exhausts from households remained consistently low throughout the period.
Initially, manufactories produced nearly eight million tons of pollutants in 1900, but this figure dropped swiftly to five million tons by 2005. Conversely, transport outflows showed significant growth, rising from nearly one million tons in 1999 to almost 3 million tons by 2005, making them the hippest among the three sources by the end of the period.
Interestingly, while industries had the highest emissions and transportation saw substantial growth, exhausts from households remained stable at one million tons from 1900 to 1999. Ultimately, household emissions fell to zero.