The pollution in a city like $Delhi$ may be controlled to a great extent by:

Choose the correct option regarding the following statements:
$(1)$ $CO_2$ contribution in global warming is $60\%$.
$(2)$ Greenhouse effect occurs due to deforestation.
$(3)$ Due to the greenhouse effect,the present average temperature at the surface of the Earth is $15^oC$.
$(4)$ The amount of $DDT$ in small fish is $0.05\ ppm$.

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Chipko Movement	$(1) \ 1987$
$(b)$ National Forest Policy of India	$(2) \ 1980$
$(c)$ Joint Forest Management	$(3) \ 1988$
$(d)$ Montreal Protocol	$(4) \ 1974$

The Government of India has introduced a concept to work closely with local communities for the protection and management of forests,which is called:

What is found in photochemical smog?

Identify the correct statement regarding Eutrophication.