Tjhe study of the Earth: Discontinuities, layers, tectonic plates.
http://www.edistribucion.es/anayaeducacion/8450021/unidad_09.html
Monday, 26 September 2016
NASA Kid's Club
https://www.nasa.gov/kidsclub/index.html
Hello, Earth Kids!
My name is Nebula. Welcome to NASA Kids’ Club – a place to play games and learn about NASA!
Sunday, 11 September 2016
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