Debate the following two issues inclass.
(a) The estimated coal reserves are said to be enough to last us for another two hundred years. Do you think we need to worry about coal getting depleted in this case ? Why or why not ?
(b) it is estimated that the sun will last for another five billion years. Do we need to worry about solar energy getting exhausted ? Why or why not ?
On the basis of the debate, decide which energy sources can be considered (i) exhaustible, (ii) inexhaustible, (iii) renewable and (iv) non-renewable. Give your reasons for each coice.