reproduce - to produce offspring
Dr. Alan Afton is a professor at Louisiana State University and he is currently studying the history, migration, and nesting patterns of bald eagles in Louisiana. He wrote History and Nesting Population of Bald Eagles in Louisiana along with Nickolas Smith and Thomas Hess Jr.
use energy - goes through the process of cellular respiration (by eating food and breathing)
Albert Lawrence Bryan is a professor at the Odum School of Ecology at the University of Georgia. He wrote Behavior and Food Habits at a Bald Eagle Nest in Inland South Carolina along with Lara Hopkins, Carol Eldridge, and Charles Jagoe.
maintain homeostasis - able to maintain balanced internal body conditions, like temperature
William Reiter-Marolf is part of the Department of Natural Resource Ecology and Management at Iowa State University. He wrote Environmental contaminants in excrement of Iowa's nesting and wintering Bald Eagles along with Stephen Dinsmore and Julie Blanchong.