Understanding ecosystems
Publisher: Harcourt School Publishers
Published: 2005
Place of publication: NY
Language: eng
Number of pages: 32
ISBN-13: 9780153470608
Subjects: Ecology; Juvenile literature; Life sciences
Table of contents: title: What are the parts of an ecosystem?; title: What factors influence ecosystems?; title: How do the bodies of animals help them meet their needs?; title: How do humans affect ecosystems?