11 atoms hope this helps!
        
             
        
        
        
Answer: alpha
Explanation: Alpha particles are fast moving streams of positively charged particles that are shown to be Helium nuclei. They have a mass
number of 4 and an atomic number of 2 and a charge of +2. Alpha particles are represented as 4He2. When 238U92 becomes 234Th90, it emitted a helium nucleus 4He2. The equation for the decay is 238U92 ---> 234Th90 + 4He2.
 
        
             
        
        
        
<em>Leaves fall from broken branches only if they were dry.Any others will not fall</em>
        
             
        
        
        
nucleus
is the power house of a cell
 
        
                    
             
        
        
        
Eukaryotic cells  are cells that have a nuclear envelope, cytoplasmic organelles, and a cytoskeleton. 
Prokaryotic cells  are cells lacking a nuclear envelope, cytoplasmic organelles, and a cytoskeleton (primarily bacteria). 
Also Eukaryotic cells have a nucleus in which the genetic material is separated from the cytoplasm.
Also Prokaryotic cells are generally smaller and simpler than eukaryotic cells; in addition to the absence of a nucleus, their genomes are less complex and they do not contain cytoplasmic organelles or a cytoskeleton 
So the correct answer would be B.
Hope I helped.