what is biodegradable su
bstances
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Capable of being broken down (decomposed) rapidly by the action of microorganisms. Biodegradable substances
include food scraps, cotton, wool, wood, human and animal waste,
manufactured products based on natural materials (such as paper, and
vegetable-oil based soaps).
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The term biodegradable is used to describe materials that decompose through the actions of bacteria, fungi, and other living organisms. Temperature and sunlight may also play roles in the decompositionof biodegradable plastics and other substances. If such materials are not biodegradable, they remain in the environment for a long time, and, if these same substances are toxic, they may pollute the soil and water. Some nonbiodegradable pollutants may be capable of causing harm to organisms in the environment.
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