Question

what is the difference between pure air and polluted air

Answer 1

In polluted air amount of harmful gases are more and in pure air amount of harmful gases are less. Polluted air creates a warm environment due to presence of harmful gases but pure air creates a moderate environment.

Answer 2

Answer:

Pure air contain 78% nitrogen, 21% oxygen and 0.03% CO2. Other gases such as argon, methane, ozone and water vapour etc, are also found in small quantities. When this air is contaminated by unwanted substance which have harmful effect on living and non-living things like nitrogen oxide, sulphur oxide, carbon monoxide, etc, is said to be polluted .