It can also be called a column.
        
                    
             
        
        
        
The generally widely accepted first step of the scientific method is to ask a question.
This is where you think of a question which you want to do an experiment on, and then later on conduct an experiment to answer that question.
        
                    
             
        
        
        
 <span>A law is a theory that has explained a number of observed phenomena, and it has predicted a number of other phenomena which may as yet be unobserved.  
In that sense, a law is a theory that has not yet been proven wrong or given rise to any contradictions. 
A theory is just a theory until it has been proven true by experiments and observation</span>
        
                    
             
        
        
        
<span>The single most abundant chemical substance of the body, accounting for 60% to 80% of body weight, is "Water"
Hope this helps!</span>