From what is coal gas obtained?

Which of the following is an endangered reptile?

Due to the active and willing participation of the local community,the Sal forests of Arabari underwent a remarkable recovery by $1983$. $A$ previously worthless forest was valued ₹ $12.5$ crores.
$(a)$ Explain how it became possible to bring such a change.
$(b)$ Mention any two values shown in this approach of forest management.

The environment is only regarded as a pristine collection of plants and animals.

In which regions are the severe effects of deforestation observed?

What measures would you take to conserve electricity in your house?