The new edition of Physicochemical and Environmental Plant Physiology uses elementary chemistry, physics, and mathematics to explain and develop key concepts in plant physiology. In fundamental ways, all physiological processes that occur in cells, tissues, organs, and organisms obey such relations. Topics include diffusion, membranes, water relations, ion transport, photochemistry, bioenergetics of energy conversion, photosynthesis, environmental influences on plant temperature, and gas exchange for leaves and whole plants. This new edition maintains the unparalleled commitment to clear presentation and improves upon the user friendliness of the previous versions.