What is the percentage of wildlife sanctuaries of India located in Gujarat?

Which of the following dams is constructed in Gujarat?

"Sustainable development depends upon the willingness of the people to change their perception of the socio-economic and environmental conditions around them:" Justify the statement.

Name two ancient water harvesting structures in Maharashtra.

What is meant by biodiversity? List two advantages of conserving forests and wildlife.

$(a)$ What is meant by fossil fuel?
$(b)$ Which fossil fuel is usually conserved when we save on electricity?
$(c)$ At the present rate of consumption,how long will the known reserves of coal and petroleum last?