Слайд 2
![WHAT IS AIR POLLUTION? Air pollution is the pollution of air by smoke and harmful gasses.](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/440509/slide-1.jpg)
WHAT IS AIR POLLUTION?
Air pollution is the pollution of air by
smoke and harmful gasses.
Слайд 3
![Claude Monet. London smog](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/440509/slide-2.jpg)
Claude Monet. London smog
Слайд 4
![Natural air pollution It is caused by natural processes (volcanic](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/440509/slide-3.jpg)
Natural air pollution
It is caused by natural processes (volcanic activity, weathering
of rocks, wind erosion, mass flowering plants, smoke from forest and steppe fires)