Assertion: ozone's effect | /r/CapableOf | remain defined
Facets:
value: poorly
type: DEGREE
Source sentences:
text: The effects of long-term chronic exposure to O3 remain poorly defined, but recent epidemiologic and animal inhalation studies suggest that current ambient levels are sufficient to cause premature aging of the lungs.
text: The effects of long-term chronic exposure to O3 remain poorly defined, but recent epidemiologic and animal inhalation studies suggest that current ambient levels are sufficient to cause premature aging of the lungs.