Not leaving the lights on when you don't need to. Also trying to conserve water
 
        
             
        
        
        
Answer:
Black hair
Explanation:
(In most cases) A child from red+black haired parents would have black hair. The allele for black hair is dominant to that of red, and would be the phenotype of the hair.
 
        
             
        
        
        
Answer:
Explanation:
Nuclear power plants use the heat produced during nuclear fission to heat water. ... The heat produced during nuclear fission in the reactor core is used to boil water into steam, which turns the blades of a steam turbine. As the turbine blades turn, they drive generators that make electricity.
 
        
                    
             
        
        
        
I believe the answer is this:
DNA replication is called semi-conservative because half of the original double-helix appears in one daughter strand formed in replication if you need any more help then please comment and let me know ok. :)
        
             
        
        
        
Answer:
Prokaryotic cell has undeveloped nucleus but eukaryotic cell has well developed nucleus.