9781422234051 | Mason Crest, September 1, 2015, cover price $20.95

9781480746022 | Teacher Created Materials, November 15, 2014, cover price $8.99

9780060890797 | Perennial, May 1, 2007, cover price $9.95 | About this edition: Presents step-by-step instructions for different outdoor activities, including making birdhouses, rain gauges, and bird baths.

9780078778209 | Student edition (Glencoe/McGraw-Hill School Pub Co, March 21, 2007), cover price $30.52

9780618334292 | Student edition (McDougal Littell/Houghton Mifflin, July 9, 2003), cover price $22.70

9789990065954 | Houghton Mifflin School, July 9, 2003, cover price $0.02

9780809494675 | Time Life Education, March 1, 1995, cover price $17.95 | About this edition: Through easy-to-read questions and answers, readers learn about the earth and its environment, ecology, conservation, pollution, and other environmental concerns

9780809497089 | Time Life Education, November 1, 1992, cover price $17.95 | About this edition: Questions and answers present information about the distribution of plants and animals, the relationships among living things, and the food chain

9781570396755 | Stg edition (Glencoe/McGraw-Hill School Pub Co, April 1, 2002), cover price $11.33 | About this edition: Complex and diverse, modern ecology is often difficult to introduce to undergraduate students in a way that conveys the excitement and enthusiasm that ecologists feel for their field.

9780670827534 | Kestrel Pr, August 1, 1989, cover price $16.95 | About this edition: Answers questions about ecology, endangered species, and the environment