Answer:
Forward chaining as the name suggests, start from the known facts and move forward by applying inference rules to extract more data, and it continues until it reaches the goal, whereas backward chaining starts from the goal, move backward by using inference rules to determine the facts that satisfy the goal.
 
        
             
        
        
        
M stands for mitosis. This is where the cell actually partitions the two copies of the genetic material into the two daughter cells. After M phase completes, cell division occurs and two cells are left, and the cell cycle can begin again.
        
                    
             
        
        
        
Answer:
DNA unzips between base pairs. 
Explanation: 
This is the first step of protein synthesis. 
 
        
             
        
        
        
I think that is is Pollution
        
             
        
        
        
Answer:
True
Explanation:
Because improper transfer of chromosome to next generation especialy sex chromosome can cuase serious diseases.