The Judicial branch of our government is the Supreme Court and other federal courts. Their job is to explain the laws of this country under the Constitution. They must decide if the laws are constitutional ( do not go against the Constitution). 
        
                    
             
        
        
        
What made slavery legal was D. the Bill of Rights, Because amendment 13 officially abolished slavery in the United States and continues to this day.
So D. is your anwser.
Hope this helps. :) 
        
             
        
        
        
Answer:
Public smoking bans appear to significantly reduce the risk of heart attacks, particularly among younger individuals and nonsmokers, according to a new study. Researchers find that smoking bans can reduce the number of heart attacks by as much as 26 percent per year.
 
        
             
        
        
        
It comes by air being pushed by other air or waves in the air...hopefully this helped you..
        
             
        
        
        
Answer:
haploid describes a cell that contains a single set of chromosomes in gametes (egg or sperm cells). they contain half of the amount of chromosomes as diploid cells, which are also known as somatic cells