The first step to DNA replication is  to unzip the double matrix which also means that they will break the double matrix.
        
                    
             
        
        
        
They use the algae in the water                                                           
        
                    
             
        
        
        
Answer: Option C) blocks oxygen transport in human blood 
Explanation:
Carbon monoxide (CO) is one of the oxides of carbon formed when fuel is incompletely burned. It can be generated from exhaust pipe of vehicles, electric generators. 
When inhaled CO attaches to the hemoglobin portion of the red blood cells, forming a bound complex called CARBOXY-HEMOGLOBIN, that is unable to transport oxygen to the body tissues. 
Thus, by this mechanism Carbon monoxide blocks oxygen transport in human blood 
 
        
             
        
        
        
Asexual reproduction is a process wherein cells produce genetically identical offspring.
Since asexual reproduction is when offspring are produced from a single parent, the offspring are identical to the parent. Sometimes, asexual reproduction is called cloning. Cloning is the production of two identical genetic copies from a single parent cell.