This book explains how plants and animals are classified. Reading Essentials in Science.
This book introduces amphibians and reptiles, including information about the characteristics they share and those that are different. Reading Essentials in Science.
This book is an overview about air and wind and describes many of their features, for example, that air has weight and that wind is motion energy. Reading Essentials in Science.
This book is an introduction to the harmful effects of alcohol, tobacco, and drugs. Reading Essentials in Science.
This book is an overview on birds and how they are grouped according to common characteristics, including songbirds, waterbirds, flightless birds, fowl, and birds of prey. Reading Essentials in Science.
This book explains what the brain and nervous system are and how they function in the human body. Reading Essentials in Science.
Acids release hydrogen ions. Bases release hydroxide ions or accept hydrogen ions. This book provides examples of these everyday acids and bases that are used daily, or in chemical laboratories. Reading Essentials in Science.
This book introduces the various types of environments in an ocean and along an ocean's shore, including rocky cliffs where hardy plants grow and the underwater communities of the coral reefs. Reading Essentials in Science.
This book explains how species have adapted to their environment over time in order to survive. Reading Essentials in Science.
This book explains the structure and behavior of the atom and how it to combines with other atoms to form molecules and compounds. Reading Essentials in Science.
Atomic (nuclear) energy and technology can be used to produce electricity, power ships, preserve foods, and to diagnose and treat diseases. This book presents an introduction to atomic energy, covering topics such as the structure of an atom, fusion, fission, nuclear power plants, and the debate over atomic energy. Reading Essentials in Science.
This book takes a scientific look at extraterrestrial and if they exist here on Earth. Reading Essentials in Science.
This book introduces bones and the human skeleton and explains their functions, which include supporting the body, giving it shape and structure, and protecting the major organs such as the heart and lungs. Reading Essentials in Science.
Crustaceans, arachnids, and insects are part of the arthropod family. Reading Essentials in Science.
Bacteria are single-celled organisms with the ability to help and harm other living things. Viruses can only reproduce in host cells, often causing infections. Reading Essentials in Science.
Trevor, Robyn and Nick decide they have a mystery to solve when Trevor discovers a suspicious looking young man snooping around. They learn about missing research involving the use of carob beans to aid in cancer treatment-potentially valuable information. With a shady looking grad student, a bitter activist and an employee of a medical research firm to deal with, our amateur sleuths are faced with their greatest challenge yet.
The farmers, workers, and pioneers of America in the 1800s were nourished by a tradition of hearty, down home cooking that is still a part of our national cuisine - New England baked beans, roast beef, turkey, corn on the cob, and pumpkin pies. With roots in the British Isles, and with important contributions from Native American food plants and cooking techniques, American food and drink quality and seasonal variety was vastly improved during the 1800s by new technologies in transportation, food storage, hygiene, and preservation, growing national and world markets, and not least the delicious ethnic cuisines of new immigrant groups. Hungry for innovation, quality, and economy, Americans in the 1800s became the best fed nation in the history of the world!
Medicine developed into a science in the 1800s, but it was a long evolution from folk remedies and superstition to a modern understanding of how the human body works and how disease is spread. Throughout much of the century, the life expectancy of the average American was decades shorter than it is now. A lack of understanding of simple hygiene contributed to the early death of many women after childbirth, and children routinely died of common childhood diseases like measles. An incorrectly treated broken arm could kill a healthy young man, and pain, disfigurement, and epidemic disease was the fate of many Americans. Traditional herbal remedies were sometimes the best treatments available, while patent medicines often contained toxic substances, and medical procedures were often painful, disgusting, and ultimately useless. The dedicated scientists and medical researchers of the 1800s made a tremendous contribution to the health and happiness of Americans.
This introduction to hiking covers such aspects as planning, clothing, supplies, food, safety, and the enjoyment of animal and plant life along the way.
An up-close look at why so many enjoy camping and the types of equipment needed for a fun and safe trip.
This book explains the various methods of scientific tools, including measurement, models, and tools that extend our senses, and how these scientific tools are changing.
This book explains how models help us test new designs and to understand living things. The book includes various types of models, such as scale, graphical, conceptual, and computer models, which are used to analyze how we understand different things.
Discover the vital role of disappearing wetlands and what can be done to protect and restore this resource.
Describes how rocks, minerals, and soils are formed, their properties, and why humans are dependent on them.
