Human influences on the environment

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Question 17

Medium

The table shows the annual masses of three atmospheric pollutants released from a major industrial zone (in thousands of tonnes) between 2002 and 2022:

Year	Sulfur dioxide ( $SO_2$ )	Nitrogen oxides ( $NO_x$ )	Fine particulate matter ( $PM_{2.5}$ )
2002	128.0	84.5	12.4
2007	104.2	76.1	10.8
2012	82.5	63.4	8.9
2017	61.3	51.0	6.5
2022	48.0	42.8	4.1

Calculate the percentage decrease in the mass of sulfur dioxide ( $SO_2$ ) released between 2002 and 2022. Show your working.

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Human influences on the environment

Question 17

Human influences on the environment Questions

Human influences on the environment

Question 17

Human influences on the environment Questions