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Differences between Biodegradable and Non-biodegradable - Class 10 Science The following are the main differences between biodegradable and non-biodegradable substances: Biodegradable compounds degrade naturally in the environment and are therefore considered environmentally beneficial. The degrading process involves air, water, bacteria, sunlight, soil, and other natural forces. Non-biodegradable pollutants pollute the environment and harm living beings because they do not decompose naturally. Biodegradable substances include dead plants and animals, their waste, fruits, vegetables, flowers, paper, and so on, whereas non-biodegradable substances include chemicals, paints, plastic, rubber, poisonous plastic, metals, and so on. Biodegradable substances decompose quickly, in a matter of days or months, whereas non-biodegradable commodities either do not break down or keep their uniqueness, or their disintegration is so slow that thousands of years are required. After decomposition, bi...