étable (1) société (humaine) (1) sédiment (1) réflexion (1) oxygène (1) modèle (1) lac (1) isotope (1) environnement (1) air (1) datation (1) froid (1) climat (1) chimie (1) Europe (1) Chemical warfare (1) Agreement (1) Showing (1) Dating (1) Valves (1) Values (1) Science (1) Records (1) Proxy (1) Oxygen (1) Ostracoda (1) Nature and nurture (1) Lake sediments (1) Example (1) Evidence (1)