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Pre-Cellular World
Transition 3 : Evolution of Plants. ie . Autotrophic Eukaryotes (Archaeaplastida) from Heterotrophic Eukaryotes 1.6 to 1.25 Billion years ago.
Transition 4 : Evolution of Metazoa.
Transition 5 : Evolution of Eusociality
Transition 6 : Evolution of Language in Humans