The quiet nature of trees hides the fact that trees are always working for us and for Earth. Trees give us goods to meet our basic needs. Trees are home to animals, insects, and birds. But their biggest and most important job is playing a role in making Earth and our environment healthy. Learn some of the ways trees help, why they are in danger, and what you can do to help protect them now. Book features: Table of Contents; Glossary; For More Information including books and web sites; Index; photos and captions; charts and graphs; source notes.
Under the algae that carpets the swamp, near the duck who paddles in ooze, close to the turtle who takes a snooze...hides a gator! Still as a log, only his watchful eyes can be seen. But when gator moves, he really moves! What happens to the duck, the turtle, the egret, the deer, and the many other critters of the swamp when gator makes his move?
This book is the record of a miracle. The metamorphosis of a tiny egg to a caterpiller, then to a chrysalis, and finally to a beautiful butterfly is one of nature's most astonishing miracles. The stunning pictures in this book - many taken with a microscopic lens - will guide you and your child or student to record and understand the progress of the miracle that takes place in your hands, with your own caterpillar/butterfly. More than 140 photographs capture rare sequences: the hatchling eating its way out of the egg; the first green meal moving through the caterpillar's intestines; and a caterpillar shedding its skin. Ample space for notes, drawings and progress charts encourage children to be scientists - and in the process, gain a profound appreciation for these remarkable tiny beings. The book includes 20 pages of teacher information, including answers to questions, charts, tips for teachers, and pages of resources.
Step back in time and follow dinosaur tracks around the world. Whether made by a few dinosaurs or large groups, these tracks provide clues to the movement and behavior of these lovable ancient creatures. What dinosaurs made the tracks and what do scientists think they were doing when they made them? The author tells the story in rhythmic rhyme that may be sung to the tune of Over the River and Through the Woods.
Los zoológicos son lugares impresionantes para ver y aprender acerca de muchos animales nativos y exóticos que habitan este mundo. Algunos animales viven tranquilos mientras otros son amenazados o están en peligro de extinción. Los trabajadores de cuidado de animales del zoológico no sólo alimentan y cuidan a estos animales, pero también ayudan a conservar y proteger especies en su totalidad a través de programas de reproducción y de “cómo sacar ventaja”. Sigue en este diario fotográfico, la extraordinaria rutina de estos trabajadores de cuidado que te lleva “detrás de cámaras”
Regrésate en el tiempo y sigue las huellas de dinosaurios en todo el mundo. Ya sean hechas por unos algunos dinosaurios o en grandes grupos, estas huellas ofrecen pistas sobre el movimiento y el comportamiento de estas adorables y criaturas del pasado. ¿Qué dinosaurios hicieron las huellas y qué piensan los científicos que los dinosaurios las estaban haciendo cuando las dejaron?
An examination of the weapons, tactics, and strategies used in the ongoing war against Islamic extremists, from guerilla combat and suicide bombings to high-tech weapons and new laws.
A simple introduction to the Chicago Cubs major league baseball team, including its start in 1876, its World Series triumphs, and its stars throughout the years
A look at potential future developments in architecture, including self-contained cities, as well as computerized blueprints and other technologies that are currently considered state-of-the-art.
A look at potential future developments in warfare, including advancements in robot technology, as well as satellite-guided bombs and other technologies that are currently considered state-of-the-art.
A look at potential future developments in medicine, including the use of nanotechnology, as well as genetic mapping and other technologies that are currently considered state-of-the-art.
A look at potential future developments in communication, including holograms, as well as the Global Positioning System and other technologies that are currently considered state-of-the-art.
A look at potential future developments in transportation, including privately operated spacecraft, as well as electric cars and other technologies that are currently considered state-of-the-art.
A look at potential future developments in space exploration, including settlements on Mars, as well as orbiting telescopes and other technologies that are currently considered state-of-the-art.
A history of the bathyscaphe Trieste's 1960 descent to the bottom of the ocean, detailing the challenges encountered, the individuals involved, the discoveries made, and how the expedition left its mark upon the world.
A fundamental exploration of battleships, including their size and firepower, history of development, gun turrets and other features, and famous models from around the world.
A fundamental exploration of aircraft carriers, including their size and carrying capacity, history of development, flight decks and other features, and famous models from around the world.
A fundamental exploration of tanks, including their size and firepower, history of development, crawler tracks and other features, and famous models from around the world.
A fundamental exploration of bombers, including their speed and carrying capacity, history of development, targeting systems and other features, and famous models from around the world.
A fundamental exploration of fighter jets, including their speed and maneuverability, history of development, cockpits and other features, and famous models from around the world.
A fundamental exploration of military helicopters, including their uses and carrying capacity, history of development, rotors and other features, and famous models from around the world.
A fundamental exploration of submarines, including their size and diving ability, history of development, periscopes and other features, and famous models from around the world.
A look at the origins, leaders, growth, and products of Amazon.com, the electronic commerce company that was founded in 1994 and today is the largest online retailer in the United States.
A look at the origins, leaders, growth, and products of Apple, the consumer electronics company that was founded in 1976 and today manufactures some of the world's most popular computer products.
A look at the origins, leaders, growth, and operations of Wal-Mart, the discount retailing company whose first store opened in 1962 and which today is one of the largest corporations in the world.
