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  1. Molecules that split apart when struck by light?

    ... HeritageScience Dictionary dissociation (dĭ-sō'sē- ā 'shən) Pronunciation Key The separation of a substance into two or more simpler ...

    2 Answers · Science & Mathematics · 08/10/2011

  2. Why do spaceships not burn up when they re-enter the atmosphere?

    ...ceramic heat shields. "...Science Dictionary ablation ( ā -blā'shən) Pronunciation Key The wearing away or destruction of the outer or forward surface...

    5 Answers · Science & Mathematics · 20/01/2012

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