Air Pollution

How many categories of pollutants do we distinguish ?

• 2

• 3

• 5

• 7

Which one these pollutants has the longest atmospheric lifetime ?

• PM 2,5

• PM 10

• CO

• SO2

Guess the atmospheric lifetime of the CO

• 3 weeks

• 2 months

• 5 years

• 100 years

Which season tends to be the time when it's the most polluted ?

• Spring

• Summer

• Autumn

• Winter

On average, how many pollution vigilance days were there in Lyon in 2021 ?

• 25 days

• 2 months

• 4 months

• 6 months

Which one is the worst for health, considering the same concentration of pullutants ?

• PM 2,5

• PM 10

• CO

• SO2

How many premature death due to air pollution yearly in the wolrd ?

• 600 000

• 1,5 millions

• 5 millions

• 7 millions

Guess the recommended European limit as a daily average for the emission of PM 2,5 in µg/m³

• 10

• 15

• 20

• 25