Assertion: ozone's concentration | /r/CapableOf | prevent damaging uv light
Facets:
value: from reaching the earth's surface
type: TRANSITIVE-OBJECT
Source sentences:
text: While this makes ozone a potent respiratory hazard and pollutant near ground level, a higher concentration in the ozone layer (from two to eight ppm) is beneficial, preventing damaging UV light from reaching the Earth's surface.