Attempted
Correct
UnAttempted
Wrong
The excessive discharge of fertilizers into water bodies results in
Thermal pollution of water bodies is due to
Due to nuclear and other conventional sources,temperature of water bodies and atmosphere increases,which has adverse effect on different organisms.
Spraying of D.D.T. on crops produces pollution of
DDT is a
DDT is a non-biodegradable pollutant. These are persistent pollutants and are not decomposed naturally or by activity of microorganisms and thus are not recycled back into the atmosphere.
The amount of freshwater of the earth frozen as polar or glacialice is
Water pollution can be stopped best by–
Water pollution can be stopped best by treating effluents to remove injurious chemicals.
Ozone hole refers to
Non-biodegradable waste is:
The most adverse effect of radioactive pollutant is
Radioactive pollution causes gene mutation. It can change the base sequence of DNA.
Fluoride pollution produces necrosis or chlorosis of –