Biological and cultural adaptations that together enhanced survival and reproduction in changing environments caused evolution in hominids. There were several major events in hominid evolution including: increased meat eating, cooking of food, controlled use of fire, milking of cattle, among others (Arjamaa & Vuorisalo, 2010). These events caused evolutionary changes in hominids from a gene-culture perspective. Increased eating of meats helped to provide more fatty acids, which would help hominid brain evolution.
Arjamaa, O and Vuorisalo, T. 2010. Gene-culture co-evolution and human diet. American Scientist 98: 140 – 147.
Bigger Brains: Complex Brains for a Complex WorldEditThe Smithsonian National Museum of Natural History has a great website for information on hominid brain evolution. Here you can visit the many discoveries such as: why brain size is increasing, what is causing brain size to increase, or the benefits of a larger brain. Visit the website to learn more: http://humanorigins.si.edu/human-characteristics/brains
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