- What is Pollution ?
- What is Acid Rain ?
- What is Greenhouse gases ?
- What is Catalyst converter ?
- What is noise pollution? Name the sources of noise pollution.
- Write any two sources and effects of air and water pollution.
- Explain the phenomenon of Greenhouse Effect.
- What are the causes and effects of global warming?
- Differentiate between biodegradable and non-biodegradable wastes
