Colors can be measured and quantified in various ways; indeed, a person's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of cone cells in the eye.
unit of service. unit of service. any individual, family, aggregate, organization, or community given nursing care. The level at which service is delivered varies with the particular unit entity.
A Service Dog is specially trained to perform a task to help someone with a disability. A seeing eye dog is one example of a Service Dog. Unlike a Service Dog, an emotional support animal does not need specialized training to handle a task. Further, Emotional Support Animals come in different breeds and animal types and are not just limited to dogs, while Service Animals are either dogs or mini horses.