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Roland Gesthuizen

NOVA Online | Life's Greatest Miracle | How Cells Divide: Mitosis vs. Meiosis - 5 views

www.pbs.org/...divide.html

Biology cells genetics science

shared by Roland Gesthuizen on 11 Mar 13 - Cached
  • Roland Gesthuizen on 11 Mar 13
     
    "How exactly does meiosis mix and halve chromosomes? Find out through this feature, which provides a step-by-step, side-by-side comparison of meiosis and mitosis."
José Gonçalves

Speed and Velocity - 2 views

www.physicsclassroom.com/...u1l1d.cfm

speed vs velocity Physics

shared by José Gonçalves on 25 Jan 14 - Cached
  • Speed is a scalar quantity that refers to "how fast an object is moving.
  • Velocity is a vector quantity that refers to "the rate at which an object changes its position."
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