“Physiological Ecology: An Evolutionary Approach to Resource Use” by Colin R. Townsend & Peter Calow is a textbook that explores the subject of nature and science through the lens of life sciences and ecology. Published in 1981 by Oxford University Press, this trade paperback book delves into the evolutionary strategies employed by organisms in their quest for resources. With 480 pages, English language, and a focus on resource use in nature, this textbook offers a detailed exploration of physiological ecology for students and professionals alike.