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You are reading an older version of this FlexBook® textbook: Human Biology - Ecology Go to the latest version.

1.2: Introduction to Ecology

Difficulty Level: At Grade Created by: CK-12


  1. You and the Environment
  2. Food Chains: How Energy Gets to You
  3. Energy Flow in a Community
  4. Cycling
  5. Cycling in Biological Communities
  6. Recycling in Human Communities
  7. Resources, Niches, and Habitats
  8. Species Interactions
  9. Human Population Growth
  10. Global Change
  11. Defining Biological Diversity
  12. Conserving Biological Diversity
  13. Conclusion: You and the Environment
  14. Glossary


H. Craig Heller, Principal Investigator

Mary L. Kiely, Project Director

Text Author

Robert B. Blair

Activity Authors

Heidi Ballard, Susan E. Schultz, Geraldine Horsma, Marjorie Gray

Project Editor

Dennis McKee


  • John Burrough's America, edited by Farida A. Wiley, copyright by Devin-Adair Publishers, Inc., Old Greenwich, Connecticut 06870. Reprinted by permission.
  • Quotes from Steve Van Matre from The Earth Speaks, copyright © 1983 The Institute for Earth Education, Cedar Cove, Greenville, W.Va. 24945. http://www.slner.com/cip/iee
  • My First Summer in the Sierra by John Muir, copyright © renewed 1939 by Wanda Muir Hanna.
  • 50 Simple Things You Can Do to Save the Earth, a quote from Katrina Lutz, EarthWorks Press.
  • Reflections from the North Country by Sigurd Olson, copyright © 1976 by Sigurd Olson. Reprinted by permission of Alfred E. Knopf, Inc.
  • Have You Heard the Cricket Song? by Winston O. Abbott, Inspiration House Publishers, P.O. Box 1, South Windsor, Conn. 06074.

Photo Credits

  • 1 (top center): Carlyn Iverson
  • 4 (top center): Carlyn Iverson
  • 13 (top center): Lior Rubin/Peter Arnold
  • 20 (top center): W.M. Banaszewski/Visuals Unlimited
  • 22 (bottom): Mike Magnuson/Tony Stone Images
  • 26 (top center): John D. Cunningham/Visuals Unlimited
  • 33 (top center): Ray Pfortner/Peter Arnold
  • 40 (top center): Cynthia A. Clampitt/Words & Pictures
  • 47 (top center): Don Normark/West Stock
  • 55 (top center): Dennis MacDonald/Photo Edit
  • 68 (top center): Cynthia A. Clampitt/Words & Pictures
  • 78 (top center): Roland Seitre/Peter Arnold

Originally Published by Everyday Learning Corporation

Everyday Learning Development Staff


Steve Mico, Leslie Morrison, Susan Zeitner


Fran Brown, Annette Davis, Jess Schaal, Norma Underwood

ISBN 1-57039-675-2

Stanford University's Middle Grades Life Science Curriculum Project was supported by grants from the National Science Foundation, Carnegie Corporation of New York, and The David and Lucile Packard Foundation. The content of the Human Biology curriculum is the sole responsibility of Stanford University's Middle Grades Life Science Curriculum Project and does not necessarily reflect the views or opinions of the National Science Foundation, Carnegie Corporation of New York, or The David and Lucile Packard Foundation

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Date Created:

Feb 23, 2012

Last Modified:

Jan 30, 2016
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