Answer:
I think section #3 
Explanation:
When i was in science class in my memory it was always in that area
 
        
                    
             
        
        
        
You can boil or evaporate the water and the salt will be left behind as a solid. If you want to collect the water, you can use distillation. This works because salt has a much higher boiling point than water. One way to separate salt and water at home is to boil the salt water in a pot with a lid. So, I would say maybe oil.
 
        
             
        
        
        
Answer:
A
Explanation:
it also stores all the cells dna
 
        
                    
             
        
        
        
'The Sedimentary rock formed from years of sediments piling on top of it and being compressed.'
        
                    
             
        
        
        
Answer:
1.20 M
Explanation:
Convert grams of Na₂CO₃ to moles.  (50.84 g)/(105.99 g/mol) = 0.4797 mol
Molarity is (moles of solute)/(liters of solvent) = (0.4797 mol)/(0.400 L) = 1.20 M