TwoParts/Paragraphs:
Readthefollowingarticle:LatePleistocenehumanpopulationbottlenecks,volcanic
winter,anddifferentiationofmodernhumans byStanleyAmbrose
http://www.bradshawfoundation.com/stanley_ambrose.php
Part1:
What is an evolutionary bottle neck andwhatare the consequences?
Part2:
What caused the bottleneck 70,000 years ago? What werethe consequencesto
early humans?