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because, not only will it cost you money, it is also proven that if at night it is dark (No lights on) you could see the stars and maybe the milkyway Some research suggests that it can be a cause to Breast cancer.

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โˆ™ 11y ago
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โˆ™ 7mo ago

Leaving lights on when not needed contributes to energy waste, increases electricity bills, and has a negative impact on the environment by producing more greenhouse gas emissions from power plants. It is important to turn off lights when they are not in use to conserve energy and reduce our carbon footprint.

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โˆ™ 13y ago

Waste of electrical energy and premature failure of the light.

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Q: Why is leaving lights on bad?
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