We are using non-renewable energy from fossil fuels at an alarming rate. This source will be exhausted if its usage is not controlled. should use energy efficiently. We should turn off electrical appliances or water taps when not in use, use energy-saving appliances, practice carpooling and walk instead of driving if the distance is short. should find ways to make use of renewable energy such as solar energy,wind energy and geothermal energy. These energy sources are inexhaustible and do not contribute to pollution.