Complex Animals: Annelids & Arthropods - CrashCourse Biology #23
Hank continues our exploration of animal phyla with the more complexly organized annelida and arthropoda, and a biolography on insects.
Crash Course Biology is now available on DVD! http://dft.ba/-8css
Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse
Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse
References:
http://www.sciencedaily.com/re....leases/2010/07/10072
http://tlc.howstuffworks.com/h....ome/earthworm-apprec
http://annelidsf.blogspot.com/
http://www.bukisa.com/articles..../41743_amazing-facts
http://www.ehow.com/about_6292....974_interesting-crus
crashcourse, crash course, biology, complex animals, annelid, arthropod, segmentation, evolution, diversity, chordate, vertebrate, ancestor, earthworm, beetle, anatomy, synapomorphy, chaetae, shared traits, trait, plesiomorphy, worm, leech, phyla, class, insect, scorpion, butterfly, lobster, thorax, exoskeleton, chitin, jointed feet, cheliceriformes, arachnid, myriapoda, biolography, pollination, flowering plants, flight, metamorphosis, nymph, pupae, crustacea, shrimp, crab Support CrashCourse on Subbable: http://subbable.com/crashcourse