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On what basis would you classify energy sources as:
a. Renewable and non-renewable?
b. Exhaustible and inexhaustible?

Are the options given in (a) and (b) the same?
 
.
 
a. Renewable and non-renewable:
 
Renewable energy sources are those which  and are  in nature.
Non-renewable energy sources are those which  and have  in nature.
 
b. Exhaustible and inexhaustible:
 
Exhaustible sources of energy are those which  after a few hundred years.
Inexhaustible energy source is one that  and is available in large quantities.