Assertion: ozone | /r/AtLocation | higher elevations
Facets:
value: from reaching the earth
type: LOCATION
value: naturally
type: MANNER
value: in the atmosphere
type: LOCATION
Source sentences:
text: Ozone occurs naturally at higher elevations in the atmosphere (the stratosphere) where it forms a layer that blocks ultraviolet (UV) light, which is harmful to plant and animal life, from reaching the earth’s surface.