# Background extinction rate

> standard rate of extinction in earth's geological and biological history before humans became a primary contributor to extinctions

**Wikidata**: [Q4839645](https://www.wikidata.org/wiki/Q4839645)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Background_extinction_rate)  
**Source**: https://4ort.xyz/entity/background-extinction-rate