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Hipervinculo Biología

Dinosaur Tracks: How Are Fossilized Imprints Forme...

How did dinosaurs leave their footprints behind so many years ago? Stomp, clomp, and squish your way to learn how to makefossils and create your very own fossil imprints!How did dinosaur footprints ge ...

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Hipervinculo Biología

Animal Tracks and Types of Soil

Squish, squash—who’s been stepping in the sand? Experiment with different types of soil and see how each type affectsan animal’s tracks.How does the shape of a track vary when imprinted in wet and dry ...