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¿Sabías que la mayoría de las montañas miden más de 1.000 pies (305 metros) de alto? A los animales y las personas les cuesta respirar en lo alto de una montaña. Descubre más datos intrigantes en Las montañas, uno de los libros de Explorando los ecosistemas.
Did you know that most mountains are more than 1,000 feet (305 meters) high? It is hard for people and animals to breathe high up on a mountain. Discover more intriguing facts in Mountains, an Exploring Ecosystems book.