Assertion: charcoal | /r/CreatedBy | heating woody materials
Facets:
value: to high temperatures in an environment
type: CAUSE
value: with little or no oxygen
type: OTHER
Source sentences:
text: Charcoal is made by heating woody materials to high temperatures in an environment with little or no oxygen (pyrolysis).
text: Charcoal is made by heating woody materials to high temperatures in an environment with little or no oxygen (pyrolysis).