This is a function of our evolution. It is how we were created. We are pulled in different directions: selfishness and altruism, aggression and cooperation, lust and love.
eBay
The Scars of Evolution will change the way you think about the world--and our place in it. Scientists have long observed that our spines were not made for upright walking. The apes that suddenly found themselves stranded in swamp land (a swamp that remained for thousands of years) had to walk upright to keep from drowning.
eBay
W. C. Osman Hill.
eBay
Book
eBay
What Teeth Reveal About Human Evolution by Debbie Guatelli-Steinberg 9781107442603 (Paperback, 1970) Delivery UK delivery is usually within 10 to 12 working days. International delivery varies by country, please see the Wordery store help page for details.
eBay
A great book for sale about what is known about human evolution up to the modern era - The Complete World of Human Evolution. It is a great resource for anyone looking to get a grasp of what evolution is.and isn't in the human population.
eBay
The Fossil Trail: How We Know What We Think We Know about Human Evolution by Tattersall, Ian Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less
eBay
Book
eBay