Louise Spilsbury
1) Fósiles
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Español
Description
Introduces fossils, describing how they are formed, where they are found, how they are identified, and how they are dated.
2) Minerales
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Español
Description
Introduces minerals, discussing how they are formed, where they are found, and their properties and uses.
3) Cristales
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Español
Description
Provides a definition of crystals and describes the six basic categories of crystalline shapes, along with a discussion of how crystals grow, how they break up, and their many everyday uses.
4) El suelo
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Español
Description
Describes how rocks become soil, the importance of soil in the environment, and the physical characteristics of different kinds of soils.