Eccrin glands is one out of the two types of sweat glads that occur over most of your body and open directly onto the surface area of your skin. When your body tempature rises, your Eccrin glands secrete fluid onto the surface of Your skin, where it cools your body as it may evaporate.
        
             
        
        
        
Answer:
is a blind, neutral experiment 
Explanation:
In Science, to have results in which you can trust, always need to be a comparative ( in this case the creatinine supplementation and the other powder). To be a serious experiment, need to have the same activities, duration and the participants need to "blind" to know which substance they are really taking, so they need to train as usual, and after some time the results will show if there is a significant difference. 
  
        
             
        
        
        
Answer:
A
Explanation:
I just took the assignment
 
        
                    
             
        
        
        
It's true that sodium is a principle extracellular electrolyte.