[Solved] Using the job order cost system, service business are able to bill clients on a weekly or monthly basis, even when the job has not been completed. Viral Passage: The process by which a virus is grown in cells or organisms over multiple generations, leading to potential changes in its virulence or transmissibility. Morphological Features: Traits or attributes of an organism's form and structure, including shape, size, and arrangement of parts, visible under a microscope or with the naked eye. Artiodactyls: A large group of hoofed mammals that includes both domesticated and wild species such as pigs, cattle, deer, and camels, characterized by an even number of toes. Cetaceans: A group of marine mammals including whales, dolphins, and porpoises, characterized by their fully aquatic lifestyle and typically large brains.