Regalo sorpresa

The scientific charge of The Hot Zone and the epic thrill of Jurassic Park converge in this exhilarating new eco-thriller about a team of scientists and Navy SEALs stranded on an island in the Galápagos, fighting to survive an evolutionary catastrophe. The year is 2007. Through widening holes of ozone depletion, the tropical sun burns human skin to a crisp. Powerful earthquakes and monstrous hurricanes wrack South America, exploding Ecuador's already anarchic instability.

An introduction to ostriches, including their size, diet, and everyday behavior and highlighting differences between those in the wild and those living in zoos.

History is full of unsolved crimes, mysterious disappearances, and strange sightings. Readers will discover some of the most well-known mysteries in history--including Amelia Earhart, Big Foot, and the Salem Witch Trials--in this fascinating, Spanish-translated nonfiction book. Featuring detailed images, intriguing facts, and informational text in conjunction with a glossary of terms and an index, readers will be enthralled from beginning to end!

Incluye práctica para la casa or la escuela, práctica de la lección y preparación para las pruebas, cartas para la casa en español y en inglés, y lecciones de preparación para el Grado 7.