Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> List five activities that are possible due to the presence of air.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 1. Living beings use air for respiration.
2. Plants use air (carbon dioxide) to prepare their food.
3. Air helps in burning of fuels and substances.
4. Air helps in the movements of sailing yachts, gliders, parachutes and aeroplanes.
5. Blowing air (wind) is used for power generation by wind mills.