An abnormal warming of surface ocean waters in the eastern tropical Pacific is termed as:

1.	El Nino	2.	La Nina
3.	ENSO	4.	Ocean hazard

The three-mile island is famous as:

Burying the radioactive wastes is not acceptable to many people as:
1. there is a risk of groundwater contamination
2. it may explode
3. it will harm the buried dead bodies
4. it may get accumulated in vegetation

The “Polyblend” developed by Ahmad Khan is a:
1. possible solution to accumulating plastic wastes
2. method for dealing with electronic wastes
3. synthetic fiber produced in India
4. organic farming product

Ecological sanitation, also known as 'Ecosan', is a new paradigm in sanitation that:

In a water body polluted with biodegradable organic compounds,
1. the BOD and DO content are low
2. the BOD and DO content are high
3. the BOD is low and DO content is high
4. the BOD is high and DO content is low

The world’s most problematic aquatic weed, “The terror of Bengal”, is the name given to:

An increase in concentration of the intoxicant at successive trophic levels is known as:

High concentrations of accumulated DDT in birds:
1. kills pathogens in their blood
2. causes sterility by affecting gametogenesis
3. leads to premature breaking of eggs
4. causes spasticity of the muscles of the body

What was added in 1987 as a pollutant to The Air (Prevention and Control of Pollution) Act, [originally passed in 1981]?
1. radioactive wastes
2. CFCs
3. ground level ozone
4. noise