The Carbohydrate Economy of Cacti is a scientific book written by Herman Augustus Spoehr and published in 1919. The book explores the unique ability of cacti to survive in arid environments by utilizing carbohydrates as a primary source of energy. Spoehr's research delves into the various types of carbohydrates found in cacti and how they are synthesized and stored. The book also examines the role of photosynthesis in cacti and how it differs from...