Answer: Nineteenth Century, 1760 precisely
Explanation: According to Peter Stearns, in the book, Defining the Industrial Revolution, industrial revolution started two and half centuries ago in three waves.
The first revolution started in 1760 in the United States and Western Europe. The second wave second wave started on the shores of Russia and Japan and some parts of eastern and southern Europe including Canada and Australia from the 1880s. In the 1960s in the Pacific Rim, Turkey, Brazil, and other parts of Latin America, the third wave started. Each major wave of industrialization got into other societies that were not outrightly industrialized affecting their basic social and economic relationships.
Answer:
mutations can result from DNA copying mistakes made during cell division, exposure to Ionizing radiation, exposure to chemicals called mutates, or infections, by viruses
B........................................
The experimental units are what you apply the treatments to. In this experiment it would be the subjects or the customers in this situation since they will be treatment (either standing at their regular height or squatting to meet the eye level which could affect the amount of tip they give). An example of randomization can be numbering each table in the restaurant and picking them out of a hat and going to that table that you randomly chose and imposing the treatment on the customers there. Because tips depend on the income of the customers and how much they are willing to give for their meal. If not even income some people are willing to give despite how much money they make so their tips may higher than the wealthy crowd. Other factors the experimenters may not be able to control is the mood of the customers as well isn't it more likely if someone is enjoying their time to give more to the server despite the service the waiter.
