Answer:
A study of the genetic links between DNA samples found at a prehistoric central Asian archeological site and west coast Native American tribes.
Explanation:
The results from research have been known to produce harms to members of the sampled population who do not actually participate in the research study. An example of the type of research that could result in group harms by stigmatizing members of the group (even for individuals who do not participate in the research) is a study of the genetic links between DNA samples found at a prehistoric central Asian archeological site and west coast Native American tribes.
 
        
             
        
        
        
Astronomy is the science of the study of planets stars and other extraterrestrial body's in outer space they will often use things like telescopes and electronic equipment as like but can use the hubble telescope as well
 
        
                    
             
        
        
        
Answer:
Cross-sectional research.
Explanation:
Here's a definition: Cross sectional research is a study in which subjects of different ages are compared at the same time.
 
        
             
        
        
        
Answer:
The correct answer is 2. Representational art. 
Explanation:
As the name states, representational art refers to an art which clearly portrays or shows something which does exit in real life. When one looks at this type of art, he/she can clearly identify the object being portrayed, <em>even if its appearance is slightly altered. </em>
The following image is an example of representational art; even if the fruit is slightly altered, we can still identify it as fruit.