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GURUKUL CENTRAL ACADMY, CH- 17- GARBAGE IN GARBAGE, OUT, WORKSHEET-1, A. 1. Red as they can neither be degraded nor recycled., 2. Red, blue; as they do not decompose easily., 3. Green bins, , EXERCISES, A. 1. d. 2. a. 3. c. 4. d. 5. c. 6. c., B., , 1. True, 2. False; Paper makes about 40% of our waste., 3. True, 4. True, 5. False; biodegradable wastes, C., , D., , 1. b. 2. a. 3. d. 4. e. 5. c., , 1. Those materials that are of no further use and are thrown away are, called wastes., 2. Polythene bags, plastic, 3. Yes, 4. The processing of used materials into new products to prevent, waste of useful materials is called recycling., 5. Recycle

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GURUKUL CENTRAL ACADMY, E., , 1. • It helps to conserve natural resources such as wood,, water and minerals., • It saves energy because less energy is used in recycling, than in manufacturing brand new products., • Recycling procedures cost lesser than the waste, disposal procedures., 2., , To keep our environment clean and free from diseases. It helps to, treat biodegradable and non-biodegradable wastes in appropriate, ways., , 3., , It helps to dispose waste harmlessly. It can be converted to, recreational spot., , 4., , Refer vermicomposting, Page 183, , 5., , F., , • People fill garbage in plastic bags and throw them away. These, bags often attract stray animals that are in search of food. Very, often, these animals swallow them and die., • All kind of plastics give out harmful gases upon, heating or burning. These gases may cause many health, problems, including cancer, in humans., , 1. Refer Table 17.2, 2., , 3Rs of waste management are: Reduce, Reuse and Recycle., Reduce: It means to use less so that less waste is generated., Reducing waste at the source level is a very effective method of, waste management. Natural resources should be used wisely., Reuse: It means using old things in one way or other, instead of, throwing them away., Recycle: The processing of used materials into new products to

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GURUKUL CENTRAL ACADMY, prevent waste of useful materials is called recycling. Man-made, products such as glass, plastic bags, paper, metals, computers and, aluminium take months or years to break down. So, recycling, helps to manage these waste items., 3., , • Do not buy packaged products, such as plastic, wrapped vegetables., • Choose durable items over the products that require, frequent replacing., • Get broken items repaired so that you can reuse them., • Make your own gifts and gift wraps instead of buying, new items., • Write on both sides of the paper. It saves paper and the, trees in turn., , 4., , Conversion of biodegradable wastes into manure is called, composting. A better way to get rid of plant waste is to make, compost out of it. The compost is rich in carbon and nitrogen., Compost looks like soil and is excellent manure for growing, plants., , 5., , Refer page 185.