Answer:
Cohesive forces cause the water molecules to stick together with a lot of elasticity, allowing the water to function very much like a rubber into a material like a glass pitcher.
 
        
             
        
        
        
Manipulation of the independent variable should change the dependent variable, the value of which "depends" on the independent variable's change in value.
        
             
        
        
        
Explanation:
An electron current, the flow of electrons, contributes to an electric current since the electron 'carries' negative electric charge. ... The flow of ions (either positively or negatively charged) also contributes to an electric current in, for example, the electrolyte of an electrochemical cell.
hope it will work well?!
 
        
             
        
        
        
Answer:
The amount of sodium is 32 mg per cracker, 49 mg per pretzel and 68 mg per cookie.
Explanation:
Let's assume amount of sodium is x mg per cracker, y mg per pretzel and z mg per cookie.
So, the following three equations can be written as per given information:
 x+y+z = 149 ........(1)
8y+8z = 936 ........(2)
6x+7y = 535 .........(3)
From equation- (2), y+z =  = 117
 = 117
By substituting the value of (y+z) in equation- (1) we get, 
                           x = 149-(y+z) = 149-117 = 32
By substituting the value of x into equation- (3) we get,
                            y =  = 49
 = 49
By substituting the value of y  into equation- (2) we get,
                            z = (117-49) = 68
So, the amount of sodium is 32 mg per cracker, 49 mg per pretzel and 68 mg per cookie.