Question

What is air pollution? How is it caused? Give its 2 harmful effects?

Answer 1

Air pollution is the contamination of air with unwanted substance that also might have harmful effects on both living and non-living things.

Causes of air pollution:

• Burning of fossil fuels release O${}_2$, CO${}_2$ and NO${}_2$ gases that cause acid rain. They also release unburnt carbon particles and smoke
• Chlorofluorocarbons (CFCs) released from refrigerators, air conditioners and aerosol sprays also cause air pollution.
• Smoke from industries.

Harmful effects of air pollution:

• It causes respiratory problems.
• Allergies, cancer and heart diseases are caused.
• Air pollution also causes acid rain.