John Muir

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Esta excelente biografía del célebre químico francés está dirigida especialmente a los lectores jóvenes y presenta los logros más significativos de este importante científico. Él realizó investigaciones decisivas sobre la fermentación y las bacterias, sostuvo que los gérmenes eran los responsables de las infecciones y desarrolló el proceso de la pasteurización, de enorme importancia para la economía y la salud pública. Además, descubrió las vacunas contra el ántrax y la rabia. También fue el primer director del Instituto Pasteur, fundado en 1888 para investigar los virus y ...

Two plays by Juan Mayorga that exemplify the author's philosophical drama. Hamelin is set in an unnamed, corrupt city where the powerful and rich prey on the poor. Will a Pied Piper save the city's children from the "rats" that plague it? La tortuga de Darwin tells the story of Harriet, the tortoise that Charles Darwin brought back to England from the Galapagos. Since her voyage, Harriet has evolved into a turtle-woman, able to think, speak, and bear witness to the terrible events of the past two centuries.

Vivid photographs and bilingual text explain each food group, revealing how each group is important for good health, how to make healthy choices, and fun things children can do to stay in shape.

Los delfínes son conocidos por ser juguetónes intelligentes—que más podemos aprender sobre ellos? Ahora en español, este título involucra a lectores jóvenes a medida que aprenden todo acerca estes mamiferoes del mar. Fotos de color agregan interés visual, y preguntas de consideración ayudan animar lectores durante su desarrollo de leer libros de no ficción. Dolphins are known for being playful and intelligent—what else can we learn about them? Now in Spanish, this title engages young readers as they learn all about these mammals of the sea. Full-color photographs add fascinating...

This workbook provides students with extra practice as they explore the five themes from the new IB Diploma Language ab initio guide (first examination 2020): identities, experiences, human ingenuity, social organisation and sharing the planet. It helps students further develop their Spanish language skills with additional exercises that complement the activities in the coursebook, with a focus on grammar and vocabulary. The workbook is ideal for teachers needing differentiated exercises for their class and can be used for independent study and revision. Answers to the workbook activities are ...