The answer is P-waves and S-waves
        
             
        
        
        
I would say C.
Developing a plan is important because it will motivate you and tell you when to get things done. It is the most efficient
Hope this helped :)
        
                    
             
        
        
        
Lungs is what helps u breath
 
        
                    
             
        
        
        
The only 'difference' is that they are different categories.
It's like asking "What's the difference between Susie and girl ?"
Or "What's the difference between Cadillac and car ?"
Displacement <em>IS</em> a vector quantity.