Write any two uses of carbon dioxide gas.

$(a)$ Explain how does burning of fossil fuels cause air pollution?
$(b)$ Justify "Dust is a pollutant".

Smog is a combination of:

It is observed that the number of asthmatic patients is increasing day by day. It is due to urbanization,industrialization,and excessive use of vehicles. Sidak's mother took some initiatives to reduce this problem. She,along with her son and his friends,prepared data on the destinations colony people visit,the different routes taken,and the timings of their jobs,and arranged for carpooling.
$(a)$ Explain the reason for the growing number of asthmatic patients.
$(b)$ Explain the values shown by Sidak's mother.
$(c)$ Suggest other methods to reduce this problem.

If there were no atmosphere around the earth,the temperature of the earth will

Explain the occurrence of land breeze in coastal areas.