1. Nucleus
2.Different
3. Size
4. Adapted
5. Body
6. Job
7. Better
        
                    
             
        
        
        
Answer:
Three foods that may increase male fertility and improve sperm health
Fish. One small study associated higher amounts of fish consumption with better sperm motility. ...
Fruits and veggies. ...
Walnuts.
hope it's helpful
thank you
 
        
             
        
        
        
Answer:
Natural Language Processing 
Explanation:
I hope it helps! Have a great day!
brenn~ 
 
        
             
        
        
        
Because you cannot test it or observe it.
A scientific theory are created through the scientific method, in the scientific method you need to be able observe it and experiment.