The generation of electricity through nuclear energy reduces the amount of energy generated from fossil fuels. Less use of fossil fuels means lowering greenhouse gas emissions and others.
        
             
        
        
        
Heterozygous parents would have the genotype Rr. In a punnett square, this would show a result of 25% homozygous dominant (RR) offspring, 25% homozygous recessive (rr) offspring, and 50% heterozygous (Rr) offspring.
(I attempted to simulate a punnett square with the text)
    <u>  </u><u>R         r    
</u><u />R| RR  |  Rr
<u></u>r | Rr   |   rr<u>
</u>
        
                    
             
        
        
        
Answer:
Cryphonectria parasitica is a parasitic fungus of chestnut trees.
Explanation: 
this was caused from a great disease  that overran the country
 
        
             
        
        
        
Almost no discernible structure