The answer is: his study does not qualify as an experiment. For the study to be an experiment, Dr. Kline would have to manipulate the independent variable in a group (for example, apply a certain treatment) and also have a control group to which he doesn’t apply such treatment.
 In this case, the study is an observational study because he only observed the subjects that were in the zoo that morning and measured the variable of his interest, that is the environmental attitude of the visitors, he did not apply a certain treatment to the group nor manipulate any variable. 
 
        
             
        
        
        
People or firm often support whoever they want in an election. AT&T’s campaign favors Democratic candidates but also donates to Republicans.
Political campaigns are often regarded as work aimed to get a desired candidate to get elected or pass an issue.
People often campaign for the candidate of their choice, they even raise funds and make sure that every thing is in place. AT&T’s often to both parties as they do not support one over the other.
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What conclusion can be drawn based on AT&T’s campaign donation records?
It only donates to presidential candidates.
It favors Republican candidates but also donates to Democrats
It favors Democratic candidates but also donates to Republicans.
It donates only to Republican candidates.
Learn more about AT&T’s campaign from
brainly.com/question/4442594
 
        
             
        
        
        
False, the Guarantee Clause is that all states should be grounded in Republican principles.
        
                    
             
        
        
        
Population and the phoenomenon of urbanization increased as a result of the Industrial Revolution