Petroleum is a ......... source.

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.

The per capita forest area in India is ......... (in $ha$)

$A$ pollutant is an agent which causes change in

When did the worst environmental nuclear power plant accident and the $MIC$ gas tragedy occur,respectively?

Maximum greenhouse gases are released by