Which one of the following is a non-renewable exhaustible natural resource?

Polyblend is made using $..............$.

What is the biological concentration of $DDT$ in the body fat of Indian people?

Provide information about Ecosan toilets.

$UV$ radiation from the sun causes which of the following eye disorders?

Match the following important dates/events related to environmental legislation in India:
$(i)$ Air (Prevention and Control of Pollution) Act
$(ii)$ Environment (Protection) Act
$(iii)$ Water (Prevention and Control of Pollution) Act $(1974)$