oxygen catastrophe (English, noun)
expansion: oxygen catastrophe (plural oxygen catastrophes)
Senses:
topics: biology
natural-sciences
glosses: An event during the oxygenation event of Earth's past, where the level of free oxygen in the environment exceeds the tolerance levels of most extant anaerobic life.
topics: biology
natural-sciences
glosses: Such an event that theoretically occurs elsewhere, away from Earth.
Forms:
form: oxygen catastrophes
tags: plural