BIOL 350 Lecture Notes - Lecture 2: Ecosystem Services

• School: Queen's University
• Department: Biology
• Course: BIOL 350
• Professor: Lonnie William Aarssen

Document Summary

We can look at this on 2 levels: homo sapiens as a species. Just a drop in the bucket of ~30million species alive today and that happen to co-occur in one snapshot of time. 99. 9% of species that have ever existed are now extinct (most life on this planet is gone) Humans have only been around in the last 75 seconds (2 million years) in the 24hr clock of the history of life (3. 5 billion years: (cid:862)well-(cid:271)ei(cid:374)g(cid:863) a(cid:374)d the state of ou(cid:396) ci(cid:448)ilization.