Answer:
The correct answer is A    DNA  is replicated before mitosis begins
Explanation:
DNA replication is one of the most significant event of a cell cycle. .DNA replication occur in the S phase or synthesis phase of the cell cycle.
        DNA is replicated once per cycle to maintain to normal chromosome number in daughter cells.
      DNA is replicated to form two new DNA molecules which are then equally distributed in each daughter cell during the mitosis phase.
 
        
             
        
        
        
Answer:
if there is more exposure to uv radiation then skin color will be darker.
 
        
             
        
        
        
Chemical changes are not usually physical so you can’t see them I guess so I would put D
 
        
                    
             
        
        
        
Epithelial tissues are the tissues that lines inside of hollow organs. <span> Epithelial tissues covers body surfaces; lines the body cavities and hollow organs.</span>
        
                    
             
        
        
        
The term organic, as related to compounds, would be best defined as a compound that contains chain of carbon and hydrogen atoms which are bonded covalently. Common other atoms that could be included are hydrogen, nitrogen and oxygen.