Question

What will happen if all coal and petroleum reserves are depleted?

Answer 1

there will be no energy source left and we have to take cycle as means of transportation .

Answer 2

There are many uses of coal and petroleum and they are the main source of most of the organic compound.The coal and petroleum are very useful as s they are limited .the petrol is useful for running vehicles and making paints dyes etc.and coal is also very important.even though there are demerits but still they are useful and also useful for cooking.and hence coal and petroleum are playing an important role in our lives