Q.1 Non-biodegradable pollutants are created by

1. nature

2. excessive use of resources

3. humans

4. natural disasters

Ans. (c) Non-biodegradable pollutants have a slow or zero rates of degradation by general biological processes. They include plastics, tin containers, heavy metals, radioactive substances, etc. These are created by human activities. like industrialisation.

Biodegradable pollutants is degraded or disposed of quickly by biological processes. Some biodegradable pollutants created by humans are paper, household waste like the peel of vegetables, fruits, and sewage.