Evolution (2) puits (1) espèce (1) recherche (1) évolution (1) écologie (1) conflit (1) ordre (1) espèce animale (1) Ecology (1) Causes (1) Variation (1) Implements (1) Diseases (1) Genetics (1) Methods (1) Forms (1) Identification (1) Voice (1) Tools (1) Species (1) Societies (1) Social classes (1) Signatures (Writing) (1) Signals and signaling (1) Sex (1) Research (1) Production (Economic theory) (1) Primates (1) Perception (1)