Book Title: Human Biology

Human Biology Copyright © by Nancy Barrickman; Kathy Bell, DVM, MPH; and Chris Cowan, M.S. is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

Human Biology is primarily adapted from Concepts in Biology by Samantha Fowler, Rebecca Roush, and James Wise, published by OpenStax, licensed under CC BY 4.0, click here to access for free.

Some sections also adapted from:

Biology 2e by Mary Ann Clark, Matthew Douglas, and Jung Choi, published by OpenStax, licensed under CC BY 4.0, click here to access for free.

Human Biology by Willy Cushwa, published by OpenStax CNX, licensed under CC BY 4.0, click here for access for free.