Answer:
Viruses. no metabolism not alive can not be killed ... The symptoms from a viral infection occur when the virus is in a lytic state. steps: attachment- ... biosynthesis- phage DNA directs synthesis of viral components by host cell ... Viral DNA destroys Cell DNA, takes over cell functions and destroys the cell.
 
        
             
        
        
        
I believe carbon dating does work to determine the age of the earth but, the answer might be <u>D</u>. Let me know if it was right.
 
        
                    
             
        
        
        
True because thermal energy is mostly always used for a machine