Soil erosion is mainly caused due to

____________is defined as the release of substances and energy (in excess of permissible limit) as waste products into the environment.

_____________is the pollutant of motor vehicle exhaust.

Air pollution causes 

__________may be man made or natural.

Incinerators are used to reduce

_______ percent of oxygen present in air. 

__________is an indication of disturbances to the composition of compound in the atmosphere.

Green house gas is 

Highest percentage of air consists of