The Air (Prevention and Control of Pollution) Act came into force in ........

In which year was the Air (Prevention and Control of Pollution) Act amended to include noise as air pollution?

$SO_2$ pollution affects which part of the plant?

......... is responsible for the premature death of plants.

According to the Central Pollution Control Board $(CPCB)$,particles that are responsible for causing great harm to human health are of diameter:

Air pollution effects are usually found on