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| Hey, do you want to come over and swim in my pool? | |
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| Sure. Does your pool have a heater? | |
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| Not exactly. We use solar energy to heat our pool. | |
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| Thats cool. How does it Work? | |
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| We put solar panels on the roof of our house. The sun reflects off of the panels and heats our pool. | |
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| But wouldn't it be easier if your parents just buy a pool heater? | |
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