Hank continues our exploration of animal phyla with the more complexly organized annelida and arthropoda, and a biolography on insects.
References:
www.sciencedaily.com/releases/...
tlc.howstuffworks.com/home/ear...
annelidsf.blogspot.com/
www.bukisa.com/articles/41743_...
www.ehow.com/about_6292974_int...
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Негізгі бет Complex Animals: Annelids & Arthropods - CrashCourse Biology #23
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