Adele Richardson

A brief introduction to crocodiles, discussing their characteristics, range, habitat, food, offspring, and dangers. Includes a range map, life cycle diagram and amazing facts.

"Introduces light's sources, components, forms, and movement, as well as humans' perception of light"--Provided by publisher.

Introduces the function, parts, and uses of balances, and provides instructions for two activities that demonstrate how a balance works.

Describes the physical features, habitat, and hunting and mating methods of North American racer snakes.

Simply examines how shells are formed, the animals that produce them, and what is involved in starting a collection.

Describes the physical features, habitat, and hunting and mating methods of mamba snakes.

Describes the Hubble Space Telescope and its role in space exploration.

Examines the history, design, construction, and uses of bridges and describes some notable examples.