80.7 percent of the U.S. population lived in urban areas as of the 2010 census, a boost from the 79 percent counted in 2000.
 
        
                    
             
        
        
        
Answer:
It can result in nonsignificant findings.
Explanation:
The strongest manipulation would render any research insignificant
 
        
             
        
        
        
Answer:
Option: C. 9 months
Explanation:
Benjamin infant niece hides her face as the stranger smile at her. The reaction is common at the age of 9 months because during this period a child gets to recognize people around him or her. She will be shy to unknown persons and hesitate to mix with them. In the same time, Benjamin niece looks back as the women after hiding her face in his shoulder because she is also curious about that person who is outside her family.
 
        
             
        
        
        
Politics is the process by which we choose government officials and make decisions about public policy. 
<h3>What is Public policy? </h3>
A system of rules, regulations, courses of action, and financial priorities involving a specific subject that is made for the benefit of the citizens that has been established by a governmental body 
With the help of politics, there were various people who were standing up for the elections and we as a citizen decide from them our representative who would make the right decisions and also take and make policies and reforms in our interest. 
Learn more about Public policy, here:
brainly.com/question/14616070
#SPJ1
 
        
             
        
        
        
That researcher was Ivan Pavlov.
These psychic secretions are related to his experiments with dogs - he noticed that dogs would start salivating at the mere sight of food, or person delivering them food, or even the sound of their footsteps (because they knew food was coming). That's why he started experimenting even further - each time he brought them food, he would ring a bell, so eventually the dogs would start salivating every time they heard a bell because they were expecting food.