[Solved] What methods are used to measure operating assets for calculating return on investment? Which of these approaches would you recommend? Explain your choice. Surface Anatomy: The study of the external features of the body and their relationship to deeper structures, as visible to the naked eye without dissection. Organelle: Specialized structures within a cell, each performing specific functions necessary for the cell's life, such as mitochondria, the Golgi apparatus, and the nucleus. Tissue Types: Categories of tissues in the body, including epithelial, connective, muscle, and nervous tissues, each serving specific functions. Cells: The basic structural, functional, and biological unit of all known living organisms, the building blocks of life.