What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?
What are the advantages and disadvantages of using a solar cooker? Are there places where solar cookers would have limited utility?
On what basis would you classify energy sources as:
a) Renewable and non-renewable?
b) Exhaustible and inexhaustible?
Are the options are given in (a) and (b) the same?