Using the energy using a bike or walk instead of using a car for short trips we can save energy, keep clean the atmosphere and keep healthy life. Lighting accounts for 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing a 100-watt lamp normally with an energy-saving light bulbs and we are still trying to invent new things to save money as well as conserve the Earth's resources. I hope that in the future the earth will be cleaner.
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