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Hipervinculo Ciencias de la Tierra y Medioambiente
A zircon grain is the oldest Earth material we have. It's formation temperature indicates the presence of water.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents y ...
Hipervinculo Geología
Name the most common gems, based on number of Google search results. Includes stones and also organic materials. Use the common English name
It is an educational content by JetPunk, site that contains ...
Hipervinculo Química
Name the correct mineral according to the chemical formula.
It is an educational content by JetPunk, site that contains a wide variety of quizzes.
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