The bootstrap is a program contained on the Rom that is automatically executed when the processor turns on. The Bootstrap Program scans the hard drive and starts the process of initializing the operating system. The version depends completely on the hardware you are using. An IBM chipset from 1988 will have a different Bootstrap program than an intel chipset from 2015. 
        
             
        
        
        
Answer: validity of data, claims, hypotheses, and observations
Explanation:
 
        
                    
             
        
        
        
Hierachy is a series of ordered groupings
        
                    
             
        
        
        
<u>Function: -</u>
The advancement of the central nervous system, the growth and operation of the reproductive organs, and also the metabolism and blood sugar level, are all regulated by the endocrine system, which is made up of all the various hormones produced by the body from conception and via adulthood and into old age.
Metabolism- The alterations in an organism's or a cell's chemistry. These modifications generate the ingredients and energy that cells and organisms require to develop, procreate, and maintain health. Anabolism and catabolism are components of metabolism.
Hormones- Chemicals called hormones function in the body as messenger molecules. They are created in one area of the body and then go to other areas where they assist regulate how cells and organs function. 
To know more about the Endocrine System, click on the below link, 
brainly.com/question/8107696
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Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.