La represa de Itaipú

Describes how the rig was built, how it stands out in the water, and how much drilling it does in a day.

This unique collection of children's games and songs is an exuberant expression of Colombian culture. The author includes a musical score for each piece, and provides a brief description of its rhythmic and melodic elements. Text copyright 2004 Lectorum Publications, Inc.

(back cover) Las tres erres nos ense an diferentes maneras de disminuir la contaminaci n ambiental. Cuando reducimos el n mero de cosas que tiramos, como las bolsas de pl stico, ayudamos a que la tierra donde vivimos est(c) limpia y que el agua que bebemos sea fresca. Cuando reutilizamos cosas, por ejemplo, si usamos ropa que a nuestro hermano mayor le queda chica, ayudamos a conservar recursos. Cuando reciclamos papel, latas y botellas vacas y las llevamos a centros de reciclaje, estos objetos se aprovechan para hacer cosas nuevas. Las tres palabras que comienzan con la letra R nos ense an a ...

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

Curiosidades sobre los históricos líderes mundiales Mahatma Gandhi (2021). Datos interesantes, curiosos o impactantes de los líderes mundiales más reconocidos a lo largo de la historia.