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(I)Recycling - it is the process to change waste materials into new recycling bottles.

(ii)biodegradable substances- the substances which can be easily and vegetable peels.

(iii)non-biodegradable substances-the substances which cannot be easily decomposed are called non- biodegradable

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recycle is the process of making a used thing into a new useful thing

biodegradable substances are substances that can change back to a harmless natural state by action of bacteria

eg; vegetable peel

non bio degradable substances that cannot be changed to a harmless natural state by the action of bacteria ,and may therefore damage the environment 

eg; plastics

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