False. There are other gasses such as nitrogen in the atmosphere.
        
                    
             
        
        
        
The formula for the slope of a straight line is the change in y divided by the change in x. Since the y axis is equal to mass, and the x axis is equal to volume, slope is equal to mass divided by volume. Therefore, the slope of a mass versus volume graph is equal to density.
 
        
             
        
        
        
<span>Ocean current circulations move warm water toward the poles and colder water toward the equator.</span>
        
                    
             
        
        
        
Answer:
Which statement describes the moment magnitude scale? 
It shows only the strength of seismic waves that were produced.