Answer:
 Radioisotopes are radioactive isotopes of an element
Explanation: Radioactive isotopes are detected by: photographic film.
a cloud or bubble chamber.
a liquid scintillation detector.
a Geiger-Muller counter.
 
        
                    
             
        
        
        
Where are the answer options and a picture of the problem?
        
             
        
        
        
Bacteria is not eukaryotic 
        
                    
             
        
        
        
Some of the organisms might have different traits that allow them to survive better than others within the population. That way the population has a greater chance of surviving.