Reason (R) : Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.
Answer:A is not correct but R is correct.
Reason (R) : Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.
Answer:A is not correct but R is correct.
Reason (R) : Such pesticides are non-biodegradable.
Answer:Both A and R are correct and R is the correct explanation of A.
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Reason (R) : High biological oxygen demand means low activity of bacteria in water.
Answer:Both A and R are not correct.
Answer:the reaction is endothermic
Answer:dissolved oxygen concentration below 5 ppm is ideal for the growth of fish
Answer:Troposphere
Answer:It has low concentration of oxidizing agent.
Answer:decrease in the amount of dissolved oxygen in water.
Answer:Ozone is not responsible for greenhouse effect.
Answer:Its main components are produced by the action of sunlight on emissions of automobiles and factories.
Answer:S02
Answer:A, B
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