Question

Differentiate between biodegradable and non-biodegradable substances with the help of one example each. List two changes in habit that people must adopt to dispose non-biodegradable waste, for saving the environment.

Answer 1

The two ways in which non biodegradable waste can be disposed are as follows:

a) By recycling - The non-biodegradable waste can be changed to reusable form by the process of recycling.

b) Landfill is the oldest form of waste disposal where, the waste are buried underground.

Biodegradable waste	Non-biodegradable waste
Those which can be easily degraded by the decomposers into substances that go into soil and are harmless to the environment.	Those which cannot be degraded by the decomposers and thus remain in the environment causing pollution.
They are natural wastes.	They are synthetic wastes.
Examples- vegetables wastes, animal excreta	Examples- plastic, polythene