Assertion: chlorofluorocarbon | /r/HasProperty | danger
Facets:
value: to the ozone layer
type: TRANSITIVE-OBJECT
Source sentences:
text: Since the CFCs are only a danger when released into the atmosphere, most users will be affected by the ban only when their refrigeration system leaks, needs repair or requires replacement.
text: But scientists realized that CFCs are a threat to the ozone layer because they break down.