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Terrestrial life would become impossible with
Aerosols decrease primary productivity by
Highest DDT deposition shall occur in
Fertilizers added to fresh water will cause
Correct order of concentration of DDT in following organisms are i. Small fish ii. Large fish iii. Phytoplankton iv. Human beings
Assertion: Agricultural output increased several times after introduction of DDT. Reason: DDT was the first insecticide used on a wide scale.
Bioremediation of Phenol, one of the most common environmental pollutants is reported to be assisted by :
The metal which is inert and when swallowed remains non-toxic but becomes severely toxic when inhaled in volatile form:
The possible drawback of bioremediation method for oil spill containment is :
Which of the two countries are most affected by global warming?
Global warming will cause
Ozone layer in upper atmosphere is being destroyed by
The two main reason for increase in CO2 gas is
Concentration of green house is increasing due to I. Deforestation II. Increased use of refrigerators III. Increased combustion of coal and petroleum IV. Increasing human population
Deforestation generally decreases
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