Assertion: stratospheric ozone | /r/AtLocation | earth’s upper atmosphere
Facets:
value: naturally
type: MANNER
value: above the earth’s surface
type: LOCATION
Source sentences:
text: Stratospheric Ozone is found naturally in the Earth’s upper atmosphere - 6 to 30 miles above the Earth’s surface - where it forms a protective layer that shields us from the sun’s harmful ultraviolet rays.