Assertion: carbon dioxide | /r/CapableOf | maintain slow decline
Facets:
value: with a particularly swift reduction
type: OTHER
value: until the industrial revolution
type: TEMPORAL
Source sentences:
text: Five hundred million years ago carbon dioxide was 20 times more prevalent than today, decreasing to 4–5 times during the Jurassic period and then maintained a slow decline until the industrial revolution, with a particularly swift reduction occurring 49 million years ago.