Etanol y otros combustibles nuevos (Ethanol and Other New Fuels)

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

• En los primeros años de fútbol, los árbitros usaban un pañuelo, que agitaban para avisar sobre sus decisiones. En 1878 se introdujo el silbato para dirigir.• Según informes antropológicos hay comunidades aborígenes en Oceanía que no saben quién es el presidente de su país, pero conocen a Maradona, Pelé y Messi.• El Estadio Tamaulipas, en México, se encuentra ubicado geográficamente en dos municipios diferentes: medio campo está en Ciudad Madero y el otro medio, en Tampico.• A los 25 años, Lionel Messi superó a glorias del fútbol, como Johan Cruyff, Marco van Basten...

Discusses Things That Rot And Break Down And Things That Don't, How Decomposing Things May Feed Insects Or Animals Or Help The Soil, And Talks About Recycling.

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.