Crash Course
Crash Course Biology #21: Comparative Anatomy: What Makes Us Animals
Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things. [8:51]
Environmental Education for Kids
Eek!: Animals: Skulls
David Stokes helps us understand differences in animal skulls. [10:42]
Crash Course
Crash Course Biology #23: Complex Animals: Annelids & Arthropods
Hank continues our exploration of animal phyla with the more complexly organized annelida and arthropoda, and a biolography on insects. [13:15]