A divide is the high ground between two drainage basins.
        
             
        
        
        
Answer:
c) Both are functions of blood, that is, to carry oxygen to  the cells and also remove wastes from the body.
Explanation:
Blood is a form  of connective  tissue and is made up of red blood cells,  white blood cells, platelets and blood plasma. The red blood cells contains a metallo-protein structure known as hemoglobin. This hemoglobin binds to the oxygen and carry them to the cells and the tissues for proper functioning of them. The waste products like carbon dioxide is carried by the blood from the body tissues to expel it out from the body.
 
        
             
        
        
        
So dark linen thread structure is chromosome that we see. And and by molecule heritage that we contain.
        
             
        
        
        
Its common. In the last 10 million years, there have been 4 or 5 reversals per million years