Use of lead-free petrol or diesel is recommended to reduce the pollutants emitted by automobiles. What role does lead play?
- AIt increases the efficiency of the catalytic converter.
- BIt inactivates the catalyst in the catalytic converter.
- CIt helps in the complete combustion of fuel.
- DIt reduces the emission of carbon monoxide.
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$(i.)$ What ecological term is used to describe the $DDT$ accumulation at different trophic levels?
$(ii.)$ List any one effect of $DDT$ accumulation on birds.
$(iii.)$ Will $DDT$ accumulation lead to eutrophication?
$(iv.)$ Does it affect the $BOD$?
$(v.)$ Name a disease caused by the accumulation of any heavy metal.
$(i.)$ What ecological term is used to describe the $DDT$ accumulation at different trophic levels?
$(ii.)$ List any one effect of $DDT$ accumulation on birds.
$(iii.)$ Will $DDT$ accumulation lead to eutrophication?
$(iv.)$ Does it affect the $BOD$?
$(v.)$ Name a disease caused by the accumulation of any heavy metal.
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