Neutron stars are created when
giant stars die in supernovas and
their cores collapse, with the
protons and electrons essentially
melting into each other to form
neutrons. Credit: NASA/Dana
Berry
        
                    
             
        
        
        
Petrochemicals include many things, I would say All of the above. Hope this helped! :)
        
             
        
        
        
Your answer would be A because none of the others make sense, Hope that helps!
        
                    
             
        
        
        
No there are no vacuoles in a human but there are in a plant but not humans.