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What is the definition of non biodegradable?

Answer:
Non-biodegradable waste will NOT break down (or won't for many many years). Examples are plastics, metal and glass. Some dangerous chemicals and toxins are also non-biodegradable, as are plastic grocery bags, Styrofoam (polystyrene), and other similar materials but will eventually break down over time.

BIOEGRADABLE: The waste that breaks down easily by the action of some micro-organism (i.e. bacteria) and also can break down in a non-poisonous form.

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