Answer: 30 years
Explanation: what is 30 plus 30... 60 it says he died in 1930 and discoverd the thing in 1960  add 30 boom its been 30 years
 
        
             
        
        
        
Answer:
C
Explanation:
abnormalities associated with developmental and reproductive systems
 
        
             
        
        
        
The answer is C I don’t think this needs more explanation but if needed just ask!
        
             
        
        
        
That would be the nucleus.
The nucleus is the control center of the cell, located in the center of a cell.