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Delta Force is the most secret Special Forces group in the US military. Delta Force has been part of many conflicts all over the world including Grenada and Iraq. Readers will explore the unit’s fascinating history as an extraordinary antiterrorism fighting force. Live-action images of Delta Force operators in training will enhance fascinating facts about covert missions and military life. Exciting sidebars offer even more thrilling content to engage young readers.
Discusses the different types of rocks and minerals found on the Earth and how they are formed, describes how fossils are formed, and explains how each can be used to discover more about Earth's geological past.
Introduces living things, discussing their characteristics, nutrition and energy production, and evolution.
Sound has the power to soothe, excite, warn, protect, and inform. Indeed, the transmission and reception of audio signals pervade our daily lives. Readers will examine the mechanics and properties of sound and provides an overview of the interdisciplinary science called acoustics. Also covered are functions and diseases of the human ear.
In this comprehensive volume dedicated to ancient Chinese civilization, upper elementarylevel readers will learn the different dynasties of ancient China, the memorable leaders that spearheaded them, and the lasting influences each period had on civilizations to follow. Readers will learn about the oldest examples of Chinese writing, which ruler was responsible for completing the Great Wall, and the cultural context in which Confucius became a prominent philosopher, among other fascinating details. These ancient Chinese contributionsall still well known todayconstitute only a few of the aspects of ancient China waiting to be discovered.
Examines the history of football, including major and minor leagues, the best games, and the best players.
Life on Earth can be viewed as a complex network of interactions between living organisms and their respective environments. By parsing the natural world into various ecosystems and biomes, the extent and significance of such interaction among species and between organisms and their natural habitats becomes abundantly clear. The study of ecology forms the heart of this engaging volume, which explores the formation of ecological communities and examines the biological diversity that forms the backbone of life on the planet.
Explains biomes and ecosystems, disucsses the importance of maintaining a healthy diversity among living things and their habitats, and describes ways life is created and sustained.
Routinely going through daily life, people may be inured to the fact that Earth takes up only a small fraction of a solar system, let alone the universe. Still, the planet we call home is unique for a number of reasons. The more we can learn about Earth and its Moonthe two bodies in the solar system of which the most has been discovered to datethe more likely scientists are to uncover truths about the universe as a whole. The properties, motions, and cycles that characterize the Earth and Moon are the subjects of this mesmerizing volume, supported with details, sidebars, and labeled illustrations that any earthling would love.