Lia Help!

Most popular questions and responses by Lia Help!
  1. science

    scientists often use models to study the movement of earth and it's moon. Why do they use models to study the movements? please help pretty pretty please with cherry on top!

    asked on December 2, 2009
  2. Science

    scientists often use models to Study the movement of earth and it's moon. Why do they use models to study the movements?

    asked on December 2, 2009