1.The ancestor giraffes had short necks. 2.The ancestor giraffes lengthened their necks by stretching to reach leaves. 3.The longer neck was passed on.
H1N1 FLU Help Slow the Flu’s Spread! Wash your hands or use alcohol-based hand sanitizer often, especially before eating Cover your cough or sneeze Do.
Chapter 17: Evolution of Populations Section 17-2: Evolution as Genetic Change in Populations.
Chapter 17: Evolution of Populations
Assignment
