Assertion: bowfin's oxygen | /r/HasProperty | toxic
Facets:
value: to most life on earth
type: TRANSITIVE-OBJECT
value: at the time
type: TEMPORAL
Source sentences:
text: Because oxygen was toxic to most life on Earth at the time, this led to the near-extinction of oxygen-intolerant organisms, a dramatic change which redirected the evolution of the major animal and plant species.