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How simple cells evolved.
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
The evolution of eukaryotic cells and multicellular organisms.
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A simple game to show how evolution by natural selection works.
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Even though there are now more than 7 billion people on Earth, we can't change the planet's orbit.
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How winds erode surfaces and form various terrain features.
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Describes erosion in landforms caused by waves.
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Covers different kinds of erosion by surface water.
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Describes erosion of rock caused by groundwater.
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Terrain features caused by glacial erosion.
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How mining affects the environment.
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