Question

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> What are air pollutants?

Answer 1

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> In urban and industrial areas, the air contains substances that are harmful to us and our environment. Such air is said to be polluted and the harmful substances present in the air are known as pollutants. [2 mark]