Answer:
fertilization it helps it 
pregnancy there pregnant 
birth they give birth to whatever it is
Explanation:
honestly idk 
 
        
                    
             
        
        
        
Well , run off water plays a big part in this.
run off water is usually when water is in a puddle or on the ground and ran off into the sewer.
i hope this helps you a lot
        
             
        
        
        
The answer is Speciation cannot occur in the absence of mutation. Speciation cannot occur in the absence of natural selection
 
        
             
        
        
        
Answer:
C. photosphere, convective zone, radiative zone, and core