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CK-12 Earth Science For High 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 human actions, and astronomy.
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CK-12 Life Science For Middle School covers: Cell Biology, Genetics, Evolution, Prokaryotes, Protists, Fungi, Plants, The Animal Kingdom, The Human Body, and Ecology.
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Photo d'un commerson au nez plat