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WebAssign has partnered with Holt McDougal to offer you, the instructor, a selection of questions, exercises, and problems from the textbook Biology 2006 edition by George B. Johnson and Peter H. Raven.

Under the terms of our agreement with Holt McDougal, you are free to use this material as part of a normal WebAssign assignment provided that the textbook has been adopted for your class. Any other use is prohibited by the publisher.

Biology copyright © 2006 by Holt McDougal
Portions copyright © 2006 by Advanced Instructional Systems Inc. All rights reserved.