perezammp perezammp
  • 06-02-2018
  • Health
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What do lungs excrete as a waste product?
The lungs are one of the organs of the excretory system. They take up oxygen and excrete ( blank ) as the waste product.

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Hairball2000
Hairball2000 Hairball2000
  • 06-02-2018
I think it's Carbon Dioxide. Hope this helps! :)
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