Final answer:
Historically, advertising for veterinary clinics was not common, but this practice has changed over time. The market revolution did bring significant changes to the U.S. economy and social structures. The belief that a theory becomes a law with time is false; they are distinct concepts in science.
Step-by-step explanation:
In the context of advertising veterinary clinics, it can be noted that historically, marketing such private medical practices was not very common. This has changed over time with the professionalization and commercialization of veterinary services. On the other hand, addressing exercise 11.3.1 about the market revolution, it is indeed true that the market revolution brought many social and economic changes to the United States. This period saw an increase in the production of goods, changes in labor structures, and developments in transportation and communication, which transformed the American economy from subsistence agriculture to more of a market-based economy.
Regarding the statement that a theory becomes a law if it has been known for a long time, this is false. Scientific laws and theories are different types of knowledge. A theory does not become a law over time. A law describes a phenomenon under certain conditions, and a theory provides the explanatory framework for those observations.