BlueDiamond153 BlueDiamond153
  • 07-09-2017
  • Biology
contestada

Which best examples why a wood-burning fireplace represents an open system.
A. Because the ashes have to be swept away
B. Because a fire requires oxygen from the atmosphere to burn
C. Because they can be used for cooking
D. Because they are not all made out of brick

Respuesta :

jeonkookie
jeonkookie jeonkookie
  • 08-09-2017
I think it's B, I'm sorry if it's wrong
Answer Link

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