Assertion: carbon dioxide | /r/HasProperty | occurring gas
Facets:
value: naturally
type: MANNER
value: in the atmosphere
type: LOCATION
Source sentences:
text: Carbon dioxide, known as CO2, is a naturally occurring gas in the atmosphere.
text: CO2 — a naturally occurring gas that is also emitted at great levels by human activity — is one of several greenhouse gases in our atmosphere.
text: Carbon dioxide (CO 2 ) is a naturally occurring gas, important to the carbon cycle for life and a byproduct of many forms of energy production.