The product is the 5th edition of the textbook “Elements of Ecology” by authors Robert Leo Smith and Thomas M. Smith. Published by Benjamin-Cummings Publishing Company in the United States, this advanced-level textbook is designed for adult and further education students. The new and sealed edition is a valuable resource for those looking to delve deeper into the principles of ecology, providing a comprehensive overview of the subject in English language. With a sturdy height of 0.9 inches and dimensions of 10.8 x 8.5 inches, this textbook is a must-have for students and educators in the field of ecology.