Question

Explain the following terms with examples?

i. Recycling.
ii. Biodegradable substances.
iii. Non biodegradable substances.

Answer 1

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

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

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

Answer 2

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