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 a type of assistance dog specifically trained to help people who have disabilities, such as visual impairment, hearing impairments,(such as post traumatic stress disorder), seizure disorder, mobility impairment, and diabetes.