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. Classify the following changes in materials if they have beneficial or harmful effects in the environment. Write them on their corresponding column BENEFICIAL EFFECTS Burning garbage HARMFUL EFFECTS Making recycled paper vase Burying fruit peelings Throwing plastic bags in the rivers Burning plastics Shaping pieces of wood into chair Throwing detergents into the sewage Burning old tires Decorating using empty bottles as pen holder • Sewing clothes .
