تماشای ویدئو Natural Selection Crash Course Biology #14 از آی-ویدئو

Hank guides us through the process of natural selection, the key mechanism of evolution. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/theCrashCourse Table of Contents: 1) Natural Selection 1:27 2) Adaptation 2:56 3) Fitness 3:36 4) Four Principals 3:54 a. Variations 4:01 b. Heritability 4:17 c. "The Str
28 مهر 1396
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