Interspecific competition I believe
        
             
        
        
        
Does it give you a word box to choose from?
        
             
        
        
        
Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
        
             
        
        
        
Answer:
Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.