Answer:
(i)
Promotion of energy conservation and increased use of renewable energy sources
are the twin planks of sustainable energy.
(ii) We have to adopt a cautious approach for the judicious use of the
limited energy resources.
(iii) Concerned citizens can do a bit by using public transport
system instead of individual vehicles.
(iv) Switching off the electricity when not in use.
(v) Proper power-saving devices can be used like 3- to
5-star air-conditioners are available in the market, which save energy.
(vi) Use of non-conventional sources of energy. After all "energy
saved is energy produced".
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