These objects are composed of frozen gases (including ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials.

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      asteroids
      irons
      chondrites
      micrometeorites
      comets
asked Mar 12, 2013 in Earth Science by anonymous
    

1 Answer

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comets
answered Mar 15, 2013 by h20 ~Top Expert~ (6,320 points)

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