Visual explorers

Young explorers will discover different types of rock, how crystals are formed, where gems can be found in the earth's crust, and more. Engaging text, detailed facts, and statistics give kids exciting scientific insight into the rocks, crystals, and gems--and the world around them. Includes glossary. Penworthy Prebound Edition.

Presents information about the rainforests, describing the variety of plants and animals that live in them and the current threat to their existence brought about by worldwide deforestation.