How is $SO_2$ an air pollutant?

For your agricultural field or garden,you have developed a compost-producing pit. Discuss the process in the light of bad odour,flies,and recycling of wastes for a good produce.

Explain tropospheric pollution in $100$ words.

Write down the reactions involved during the formation of photochemical smog.

Which solvent from the following is used in order to avoid the creation of waste and the pollution of air?

Match the water pollutants given in List-$I$ with their sources given in List-$II$.

List-$I$	List-$II$
$A$. Toxic heavy metals	$1$. Soil erosion from agricultural and mineral industries.
$B$. Pesticides	$2$. Domestic sewage disposal.
$C$. Sediments	$3$. Chemical factories and industries.
$D$. Microorganisms	$4$. Substances used to kill insects,fungi,and weeds.