Assertion: tritium | /r/AtLocation | the atmosphere
Facets:
value: naturally
type: MANNER
Source sentences:
text: Tritium is a naturally occurring radioactive form of hydrogen that is produced in the atmosphere when cosmic rays collide with air molecules.
text: Tritium is naturally produced in very small quantities in the atmosphere, comprising ~10−18% of natural hydrogen.
text: Tritium is produced naturally in the atmosphere when cosmic rays collide with air molecules.
text: Tritium is produced in the atmosphere when cosmic rays collide with air molecules.
text: Tritium is produced in the atmosphere when cosmic rays collide with air molecules.