Ecosystems
By: Nancy Finton.
Contributors: National Geographic Society (U.S.)
Series: National Geographic reading expeditions; Life science
Publisher: National Geographic
Published: 2004
Place of publication: Washington, D.C
Language: eng
Number of pages: 32
Subjects: Grassland ecology -- West (U.S.) -- Juvenile literature.; Prairie ecology -- West (U.S.) -- Juvenile literature.; Biotic communities -- West (U.S.) -- Juvenile literature.
Genres: Juvenile literature.
Description: Studies prairies and savannas as examples of grassland ecosystems.
Notes: Includes bibliographical references (p. 30) and index.
Table of contents: title: Introduction: a pack of "dogs"; title: Striking a balance; title: Pass the energy, please; title: Picture this: prairie dog digs; title: Growing populations; title: Thinking like a scientist: reading a graph; title: Hands-on science; title: Science notebook; title: Glossary.