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This project shows one way that sedimentary layers are formed as sediments (mud and silt, sand, pebbles and rocks, other ) settle over time.How do sedimentary layers form?It is an educational content ...
Huff, puff and blow as hard as you can—do you think you can blow down a sand castle with your mighty breath? Blowing air erodes—wears away—sand and dirt. In Three Little Pigs, houses of straw or twigs ...