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Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

En Gertrudis en “érase una vez el mundo de las emociones. El ratoncito y el canario" la autora analiza diferentes emociones así como diversas situaciones que tanto pequeños como adultos hemos experimentado en alguna ocasión y a través de historias divertidas y entrañables se podrán ver reflejadas dichas emociones en los personajes que viven dichas aventuras. Recomendado a partir de 6 años Nota: este libro es gratuito. Si al descargarlo se solicitase una tarjeta de crédito, pulsar en el botón "descargar muestra", ya que se descargará el libro completo.

“Dino” Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children’s books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

El personaje más carismático de la red, el youtuber con más seguidores, protagoniza este cómic inspirado en los videojuegos, que os llevará a explorar mundos diversos, a combatir contra criaturas hostiles o a superar pruebas imposibles. Convertido en un héroe del mundo gamer, ELRUBIUS os propone acompañarle en esta experiencia única que os hará viajar en el tiempo, salvar a la chica de sus sueños y transitar entre la dimensión virtual y el mundo real. www.elrubius.com

Based on the premise that all young people should learn to make decisions, respect themselves, and resolve challenging problems, this book is a self-help guide for adolescents to develop positive thinking, high self-esteem, and personal power. Exercises guide readers through learning about their own feelings, dreams, and needs while stressing that they are responsible for their own behavior and happiness. Situational anecdotes used to enhance the discussion are age-appropriate and relevant to children. Writing and keeping a journal are encouraged, and group exercises make the book useful in...