Yes true that the promotion is used to do so.
        
             
        
        
        
The correct answer would be the second option. The correct plan for his experiment would be that the temperature, the type of limestone, and the type of acid are controls. The amount of acid and the amount of damage to the limestone are variables. To determine the degree of damage of the acid it would be best that the amount of acid is the manipulated variable while everything else are assumed constant.
        
                    
             
        
        
        
Educate and condition us to know the difference between right and wrong.
it helps us build character,and develop our own sense of reasoning
        
             
        
        
        
Answer: Confidentiality of the individual subject's responses. 
The most important issue that the researcher addressed while planning this research was to keep the confidentiality of the individuals who participated in the survey. By simply answering the questions anonymously and dropping them in the survey box, participants were able to express their thoughts more freely. 
 
        
                    
             
        
        
        
The answer is. he deserted that mixing colors opicallycreated the most instance colors