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5.Write short notes on 4R principle.
6.Why are plastic containers favoured for storing food?
Answers
Answer:
One of them is 4R, representing reduction, reuse, recycle and recovery. Reduction means reducing waste at the source such as buying what you really need and lessening package. Reuse is to repeatedly use one thing like shopping bag than throwing it away directly.
Explanation:
plastic containers favoured for storing food as the food doesn't react with plastic as the reactivity of plastic is very less
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Answer:
5.The waste management hierarchy breaks this process down into four parts, also known as the Four R's: Refuse, Reduce, Reuse, and Recycle. Most people know them by heart as a slogan, but they're actually a hierarchy that starts with the first and most preferable option, and goes down the ladder. Don't recycle plastic, for example, when you can reuse it, or—even better—quit using it altogether in the first place.
6.Plastic containers seem more convenient than metal containers. This is because of their light weight, lower price, good strength and easy handling. Being lighter as compared to metals, plastics are used in cars, aircrafts and spacecrafts also.