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Matemàtiques (80)
Ciències Naturals (4512)
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How mining affects the environment.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Hipervinculo Ciencias de la Tierra y Medioambiente
Energy use in the U.S. and a comparison of oil use amongst the top oil-using nations.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
How fuel can be produced from biological materials.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
How fuel can be produced from biological materials.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Overview of how energy is used, and how it can be conserved.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Overview of how energy is used, and how it can be conserved.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Hipervinculo Ciencias de la Tierra y Medioambiente
Definition of conservation, and conserving energy in transportation and at home.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Describing landforms as height above sea level.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Overview of electromagnetic radiation.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Hipervinculo Ciencias de la Tierra y Medioambiente
Overview of electromagnetic radiation.
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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