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1. Collect information on alternative sources of energy.

2. Compare the working of an engine with the activities performed by a living cell. Identify similarities and
3. How does using train as transport (compared to the use of bus) conserve more fuel?



a point :-solar energy is the best example for alternative energy

:-tidal energy can be used since it is freely available in beach ares

:-geothermal energy is useful...

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