Assertion: carbonic acid | /r/HasProperty | taken
Facets:
value: from the air
type: LOCATION
Source sentences:
text: One often hears the opinion expressed, that the quantity of carbonic acid in the air ought to have been very much greater formerly than now, and that the diminution should arise from the circumstance that carbonic acid has been taken from the air and stored in the earth's crust in the form of coal and carbonates.