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¿Por qué la victoria polaca de agosto de 1920 recibió el nombre Cud nad Wisłą, “Milagro del Vístula”? Esta canción familiar cuenta cómo Polonia, independiente desde 1918 tras 123 años de repartos, defendió Varsovia y cambió el rumbo con valor, organización, inteligencia y esfuerzo colectivo. También une la memoria de la batalla con el 15 de agosto, el agradecimiento por el servicio y el cuidado de la paz.
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3:17How does a waterfall begin, and why does its edge slowly move? This song shows gravity pulling river water over a rocky ledge, while the current carries sand and pebbles that wear away softer rock over a long time. It’s one common way waterfalls form.
2:19Follow Ola’s cheese-sandwich bite on an imaginary camera trip into her stomach. See how muscle movements mix the food, while gastric juice and enzymes help break it down before small portions move on to the small intestine.
3:13Maja turns on the TV and wonders how a fish can swim across the screen—and where its splash comes from. This song explores how a signal guides pixels and speakers, how changing still pictures appear to move, and how a vibrating speaker moves the air to make sound.
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