I. Hominids Stand Up

a. Primate Comparisons
b. Footprint Evidence
c. Skeletal Comparisons
d. Advantages of Bipedalism

II. Bigger Brains

a. Skull Comparisons
b. The Timeline of Hominid Evolution

III. Migration and Variation

a. Hominid Migrations
b. Variation in Human Pigmentation
c. Pigmentation and Ultraviolet Intensity
d. Other Human Adaptations

IV. Tools and Speech

a. Stone Tools
b. Evidence for Speech

V. Agriculture

a. Grasses as a Food Source
b. Changing Lifestyles

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