Which one of the following is not related to $5\; F's$ of the Chipko movement?

Assertion : The concentration of methane in the atmosphere has more than doubled in the last $250$ years.
Reason : Wetlands and rice fields are the major sources of methane.

Which act was enacted by the Government of India to protect and improve the quality of our environment and to control environmental pollution?

Besides $CH_4$ and $CO_2$,which of the following is another greenhouse gas emitted from agricultural areas?

The $CO_2$ content of the atmosphere has increased in the last $150$ years from:

Match the following columns:

Column-$I$	Column-$II$
$(a)$. Ozone thickness	$(i)$. $UV$ rays
$(b)$. $CFC$	$(ii)$. Refrigerator
$(c)$. $El$ Nino effect	$(iii)$. Temperature increase
$(d)$. Skin cancer	$(iv)$. Dobson unit