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Moon formed from a collision between Earth and a large asteroid, Theia.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
The Permian mass extinction was the biggest in Earth history. Scientists do not know what caused it but there are several possibilities.
It is an educational content of CK-12 Foundation (to access some ...
There are three categories of actions that humans could take to keep an asteroid from hitting Earth. None is very practical.
It is an educational content of CK-12 Foundation (to access some of the CK-1 ...
How Earth's climate has changed in the past.
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
Describes characteristics of asteroids.
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
Describes characteristics of asteroids.
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
How many of these disasters -- both natural and man-made -- can you identify?
It is an educational content by JetPunk, site that contains a wide variety of quizzes.
Hipervinculo Historia
How much do you know about the first days of the year?
It is an educational content by JetPunk, site that contains a wide variety of quizzes.
In this teaching unit you will learn: To understand in a qualitative way the notion of relative movement, to a sufficient degree to be able to explain the apparent movement of heavenly bodies as a con ...
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