In Gujarat,how much area is covered by forest (in $,\%$)?

What is the importance of forest as a resource?

Khadins,Bundhis,Ahars and Kattas are ancient structures that are examples for

$(a)$ Mention any two advantages of constructing dams.
$(b)$ Name a dam which was a subject of much opposition from locals as well as $NGOs$.
$(c)$ Mention any three problems which may arise due to the construction of large dams.

Sustainable development implies a change in all aspects of life. Justify the statement.

Suggest a few useful ways of utilizing waste water.