FOOD WASTE REDUCTION AND SUSTAINABILITY
FOOD WASTE REDUCTION STRATEGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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persistent
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synergistic
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acute
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threshold
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Detailed explanation-1: -Microorganisms in the soil slowly break down DDT (it can take anywhere from 2 to 15 years to break down half of the DDT). DDT does not dissolve easily in water and is mostly found in the sediment on the bottom of bodies of water. DDT, DDE, and DDD can build up in plants and animals.
Detailed explanation-2: -DDT and some of the breakdown products of DDT, principally DDE, are highly persistent in soil, sediment and biota as they are relatively resistant to breakdown by the enzymes and higher organisms found in the soil (WHO, 1979). Thus, contamination by materials can last long after cessation of DDT use.
Detailed explanation-3: -DDT is harm to all biota of the planet as it is non-biodegradable, and tends to become more concentrated as it moves up the food chain. It is a fat-soluble chemical, and accumulates in the fat deposits of the body. Acute DDT toxicity in man includes nausea, irritability, weakness, muscle tremors, and convulsions.
Detailed explanation-4: -DDT is an extremely persistent compound due to its near insolubility in water and tendency to bioaccumulate in fatty tissue and biomagnify throughout trophic levels. By 1972, DDT use was banned in the United States and worldwide production and use began to decrease as well.