Best Selling Books by Rebecca L. Johnson

For hundreds of years, people found the fossils of ancient sea creatures at the tops of tall mountains. Scientists puzzled over this problem. A fish couldn''t have swum up a mountain. And how could rocks on a mountain move up from the bottom of a sea? Geologists finally found the answers they needed in the 1960s, when they developed the theory of plate tectonics. This theory revolutionized our understanding of the earth. Plate tectonics explains how volcanoes form, why earthquakes happen, and what goes on deep inside the earth to make the continents move. This book tells the story of scientists and their discoveries to explain how the theory of plate tectonics came to be.

Allocation of natural resources has become a prominent concern at the local, state, and federal level. Competing uses for increasingly scarce resources are requiring that the relative values of those uses be investigated. Although many types of value are important in decision making, this book is concerned with the economic value of natural resources. Economic values for certain natural resources are readily observable in markets. For others, however, market prices are not available, and estimates of value must be made through nonmarket valuation techniques. The progress that has been made in improving the theory, methods, and applications of these techniques has been remarkable. Along with the progress, however, come new problems that must be addressed. The chapters presented in this volume are a collection of examples of both progress and problems.

Explains what plant cells are, how they were discovered, their components, how they divide, different kinds, and what they do.

Discusses the function of the muscular system and how it works, and explains how to keep muscles healthy and functioning properly.

Offers information about nanotechnology, a new scientific field that involves moving individual atoms and molecules around to create things on an ultra-small scale.

DNA.

How do butterflies find their way as they migrate thousands of miles each year? See how scientists track and learn more about birds, whales, and butterflies that migrate.

"Four students travel to dry, icy Antarctica to study the AdeÌ1lie penguins. They use all they have learned to make an important rescue by themselves"--Publisher''s website

Discusses the National Weather Service and its importance in keeping us safe by forecasting severe weather conditions.

Machines make work easier to do.

Introduces the roles that light and sound waves play in everything from modern medicine to music.

The reader follows scientists as they travel to the ocean floor, visit an underground cave, and peer into the world of noctural animals. Describes tools and techniques scientists use to gather information. Explains how a hydrothermal vent can support life. Describes some of the challenges scientists face in exploring underground environments. Explains how animals adapt to a nocturnal environment.

Discusses the greenhouse effect, research into its causes, and possible impact on our planet.

Overview of life and work of archaeologist Johan Reinhard, focusing on his discoveries of Inca mummies and antiquities.

Overview of life and work of paleontologist Paul Sereno.

This series presents the diverse topics of the brain, body functions, fitness and nutrition, bones and muscles, fighting disease, and making healthy choices.

Readers take an imaginary trip inside the body to learn what makes each person unique. Learn about chromosomes and genes and watch them at work.

Describes the day-to-day experiences of several women who work as scientists, helicopter pilots, snowplow drivers, and doctors in Antarctica.

Provides opportunities for students to develop and apply fundamental mathematical and scientific skills.

An account of various research projects involving the animal and plant life of Australia''s Great Barrier Reef.

Facts and stories that explain the relationship between animals and the environment and recognize the contributions scientists make in understanding changes to the environment.

"A content-based fiction book--Science"--Cover, p. 1.

"A group of students studies a rare animal called a bilby in the Australian outback. They realize the value of their work when they save a bilby''s life"--Publisher''s website

Discusses the function of the muscular system and how it works, and explains how to keep muscles healthy and functioning properly.

An account of various research projects involving the animal and plant life of Australia''s Great Barrier Reef.

Discusses how scientists use submersibles to explore the depths of the ocean, surveys the development, operation, and equipment of the Johnson-Sea-Link sub, and describes a typical dive to the bottom of the sea.

责任者译名:约翰逊。