Crash Course
Evolutionary Development: Chicken Teeth - Crash Course Biology
Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes...
Crash Course
Crash Course Biology #17: Evolutionary Development: Chicken Teeth
Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes...
Khan Academy
Khan Academy: Cellular Evidence of Common Ancestry
Explore the evidence that scientists have discovered that show that all living things have originated from a common ancestor. This video will show how cellular evidence can be used to construct evolutionary trees. [3:49]
Khan Academy
Khan Academy: Thomas Malthus and Population Growth
Thomas Malthus's views on population. Malthusian limits.