Question

different between pure air and pulluted air​

Answer 1

Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles. Polluted air contains harmful gases and unwanted substances

HOPE IT HELPS.!!!!!!.

Answer 2

Answer:

Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles.

Polluted air contains harmful gases and unwanted substances.