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Hipervinculo Geología
The soil beneath your feet all looks the same, doesn’t it? Surprisingly, soils in different locations actually have different components. In this science project, you can examine the layers that make ...
Hipervinculo Biología
How can scientists figure out what a dinosaur’s footprints looked like? When a dinosaur walked near a stream, it may have left footprints imprinted in the earth. If the stream the footprints flooded, ...
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