Differentiate between biodegradable and non-biodegradable substances. Cite examples.
| Biodegradable substances |
Non-biodegradable substances |
|---|---|
| These can be broken down into simpler substances by biological processes and actions of microorganisms. |
These can not be broken down into simpler substances by biological processes or by action of microorganisms. |
| Examples: paper, vegetable peels, leaves. | Examples: DDt, polythene bags, plastics. |
| They are environmentally friendly. | They are not environment friendly. |
| can be recycled naturally as well as by humans. | cannot be recycled. |
| Can produce useful products after biodegrading. | These pollute the environment. |