Match the following columns:

Column-$I$	Column-$II$
$(a)$ Haryana	$(1)$ Ozone hole
$(b)$ Chernobyl	$(2)$ Integrated organic farming
$(c)$ Garhwal	$(3)$ Radioactive waste leakage
$(d)$ Antarctica region	$(4)$ Chipko movement

The Ministry of Environment and Forest has initiated the Ganga Action Plan and Yamuna Action Plan:
$(i)$ To save these major rivers of our country from pollution.
$(ii)$ It is proposed to build a large number of sewage treatment plants.
$(iii)$ Under these plans,only treated sewage may be discharged into the rivers.

Jhum cultivation is prevalent in $.................$.

At the beginning of the twentieth century,forests covered about ........... of the land area of India. (in $\%$)

Which of the following does not occur when sewage is discharged into water bodies?

Identify the correctly matched pair.