the line graph provided reveals the emission levels of various contributors to air pollution in the United Kingdom from 1990 to 2005, measured in million tonnes (m).
It is clearly seen that there was a downward trend in almost all categories , with the exception of vehicle emissions, which displayed an increase.
In 1990, the total volume of air contaninants commenced at roughly 8 m, experiencing a gradual decline, and ultimately reaching at 5 m at the end of the studied period. Notably, the industrial sector emerged as the predeminant source of emissions, peaking at approximately 6 m in 1990, and disminishing remarkably to 2 m by 2005, thus remaining position as the highest contributor to air contamination during four-five of this period despite the significant reduction.
In terms of other sources, Inspite of the figure for transport and household emissions being equal at the beginning of the period shown, with 1m, they had opposite tendencies. The number of harmful gases released into the air by transports fluctuated moderately around 1 m from 1990 to 1999. It plunged and surpassed the figure for industry at 2,5 m in 2002, reaching 3m by 2005, while the number of exhaust discharged into the atmostphere by houshold remained constant during 9 years first, but dropping steadily to 0 m by the end of the years under review.