Final answer:
Services such as dentistry and the provision of newspapers are forms of professional work in the fields of medicine and media, respectively, provided in exchange for payment.
Step-by-step explanation:
The services referred to in your question, such as those provided by a dentist or through a newspaper, represent types of work that professionals perform for consumers in exchange for payment. Dentistry is a field in medicine that is devoted to the care and treatment of the teeth, gums, and other parts of the oral cavity. A newspaper, on the other hand, is a regular publication that provides news, information, and often includes opinion pieces and advertisements. It is a product of the media industry, which can also be seen as a service touching upon the fields of communications and journalism.