: Similarities in early stage vertebrate development.
: Labor, speech, abstract thinking, and collective lifestyle. : Similarities in early stage vertebrate development
: Vestigial organs (appendix, wisdom teeth) and atavisms. : Similarities in early stage vertebrate development
: Homo erectus (mastery of fire, migration out of Africa). : Similarities in early stage vertebrate development
: Understanding how social factors eventually dominated biological ones. 💡 Key Takeaway