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Sources of Light and Heat

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    Light and Heat
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  • Is this a source of light or heat?
    light and heat
  •  10
  • Is this a source of light or heat?
    light and heat
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    light
  •  10
  • Is this a source of light or heat?
    heat
  •  10
  • Is this a source of light or heat?
    heat
  •  10
  • Is this a source of light or heat?
    heat
  •  10
  • Is this a source of light or heat?
    heat
  •  10
  • Is this a source of light or heat?
    heat
  •  10
  • Is this a source of light or heat?
    light and heat
  •  10