Answer:
Among individuals age 65 and over, the number of three-generation households has declined from 70 percent in 1980 to 16 percent in 2010.
Explanation:
<em>It is D. Sales tax. Hope this helps</em>
D, Occupational Safety and Health Review Commission :)
Answer:
In Ivan Pavlov's famous studies, the food was the unconditioned stimulus, and the salivation was the unconditioned response.
Explanation:
Ivan Pavlov (1849-1936) was a Russian physiologist who conducted studies on behavior conditioning with dogs. In his studies, dogs would learn to associate different stimuli and produce certain responses.
A unconditioned stimulus is something that produces a natural, automatic response. That natural response is called unconditioned response. In Pavlov's studies with the dogs, he would show them food, and the dogs would start salivating because of it. That means the unconditioned stimulus was the food, and the unconditional response was the salivation.
In the early civilization there was an upper and lower class relationship between government and social classes. Early civilizations came in existence in Lower Mesopotamia in 3000 BCE followed by "Egyptian civilization" (3000 BCE) along the Nile, Harappan (Indus Valley) civilization in the Indus River Valley (in Asian continent and at present time India and Pakistan, 2500 BCE).
The Chinese civilization established with "yellow and Yangtze Rivers" in 2200 BCE. In the recent times archeologists are searching in Tamil Nadu (India), found some vassals and other things which may have a connection with Indus Valley civilization.
