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प्रश्न
Write the benefits of recycling.
उत्तर
- Old newspapers, note books, and magazines are sold to a scrap dealer. They will be made into new paper.
- PET bottles are recycled into plastic threads and used to make sports T-shirts.
- Old glass bottles and broken glass pieces are melted to make new glass.
- Broken metal items like tiffin boxes and plates are melted and made into new metal products like toys.
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संबंधित प्रश्न
Differentiate between biodegradable and non-biodegradable substances with the help of one example each.
After the examinations Rakesh with his friends went on a picnic to a nearby park. All friends carried cooked food packed in plastic bags or plastic cans. After eating the food some friends collected the leftover food and plastic bags etc and planned to dispose them off by burning. Rakesh immediately checked them and suggested to segregate the leftover food and peels of fruits from the plastic materials and respectively dispose them off separately in the green and red dustbins placed in the corner of the park.
(a) In your opinion, is burning plastic an ecofriendly method of waste disposal? Why? State the advantage of method suggested by Rakesh.
(b) How can we contribute in maintaining the parks and roads neat and clean?
Which of the following groups contain only biodegradable items?
If all the waste we generate is biodegradable, will this have no impact on the environment?
Fill in the following blank with suitable word :
Plastic is a ...............material whereas paper is a.............material.
Describe an activity to show that while paper is biodegradable but plastic (say, polythene) is non-biodegradable.
Explain why, some materials are biodegradable but some are non-biodegradable.
State two advantages of using disposable paper cups over disposable plastic cups.
What is separation of waste?
If you dump kitchen waste in a pit, it may, after sometime
