Glaciers and sea ice are vital to sustaining aquatic ecosystems and regulating ocean water temperature. Permafrost, a type of ground ice, dramatically affects the infrastructure and agricultural output of several communities around the world. The development of these varying formations and the interplay between them and the environment are thoughtfully considered in this fascinating volume.

Lakes and wetlands are significant ecosystems that nourish, sustain, and house many of the planet's plant and animal species. Though both of these regions are defined by water-both fresh and saline-each lake and particular type of wetland also has characteristics all its own. This detailed volume considers the formation, composition, and maintenance of these intricate ecological units and the various life forms they support. Dramatic full-color photographs...

Earth's biosphere supports several unique biomes and ecosystems. Though they operate as self-contained units, these regions also operate as part of a global network, nurturing interdependence among greatly diverse plant and animal species. The evolution of these wondrous realms-both aquatic and terrestrial-and the various natural elements that distinguish them from one another are the subjects of this comprehensive volume.

The Earth's capacity to sustain life increasingly depends on the actions of humans and our commitment to preserving the planet's incredible biodiversity. Because its ecosystems are vulnerable to pollution, overuse, and numerous other damaging activities, plants and animals that rely on these regions to subsist are significantly threatened. This insightful volume examines various conservation measures, such as habitat management, that help control...

Its constant evolution over the millennia since its inception has made the Earth a dynamic entity, subject to numerous climactic and environmental forces that are forever changing this planet. In its most recent stage, the planet has seen an incredible diversification in plant and animal life, with the most prominent development of the Cenozoic era being the emergence of mammals. This book examines our most immediate ancestors and the geologic, geographic,...

The planet's natural dips and elevations, slopes and structures, stud the world's landscapes and enrich its panoramas. However, the Earth's landforms should not be viewed as anomalies in its topography; rather, they are often invaluable components of ecosystems and hold significant clues to the natural forces that fashion our environment. This comprehensive volume examines the various landforms-from mountains to caves to glaciers-that can be found...

Dinosaurs have captured the imaginations of children and adults alike since the first fossil discoveries mapped them onto our general body of knowledge. This book journeys to an era long before humans, where dinosaurs were once masters of land, sky, and sea. In addition to accounts of significant dinosaur species and their extinction, readers will learn about the major life forms, both plant and animal, alongside whom dinosaurs dwelled, as well as...

Often concealing millennia worth of Earth's history, rocks seem to project an impression of durability and permanence that belies their transformation over time. Seen in all shapes and sizes and found in many of the planet's ecosystems, rocks have been subject to various natural forces that have affected such attributes as their elasticity, strength, and ductility (that is, their ability to be fashioned into a new form). The general properties as...

While they come in all shapes, textures, and sizes, animals that subsist on the Earth's natural vegetation share many common elements as well. Occupying a unique place in the food chain, grazers all over the Earth provide vital nourishment for carnivores and are often valuable to humans for meat, skins, and various domestic uses. This volume provides a colorful view of these varied and complex creatures as well as the features and behaviors that both...

Primeval jungles, mountain ranges, and the cover of deep forests are not the only domains of meat-eating creatures. Carnivores also can be found stalking prey from the air, in ocean depths, and marshy swamps. Raptors, sharks, and crocodiles are among the most predominant non-mammalian meat-eaters that rely on hunting or scavenging for survival. This volume examines the various species in this select grouping, investigating the physical characteristics...