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Hipervinculo Ciencias de la Tierra y Medioambiente
The CK-12 Earth Science for Middle School Teacher's Edition complements the CK-12 Earth Science for Middle School FlexBook® resource covering the study of Earth - its minerals and energy resources, it ...
CK-12 Earth Science For Middle School covers the study of Earth - its minerals and energy resources, processes inside and on its surface, its past, water, weather and climate, the environment and huma ...
Hipervinculo Ciencias de la Tierra y Medioambiente
Earth Science concepts for middle school.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
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