Computers & Technology

Help guyz...have 2 make a chart on any topic using waste material?

the topic can be any like WATER HARVESTING,RECYCLING OF PLASTIC BAGS?????
BUT HOW SHUD I START ND WAT SHUD BE ITS HEADING.........
PLS GIVE SUITABLE ANSWERS WITH CORRECT ND EASY EXPLAINATION

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Last updated by bhuvaneswari
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