Answer:
option B is correct
Explanation:
the effect of external physical factor on cell division is clearly seen on in density dependent inhibition( a phenomenon in which crowded cell  stop dividing) 
 
        
             
        
        
        
Answer:
50%
Explanation:
let me know if im right tho 
 
        
                    
             
        
        
        
Answer:
1. x chromosome
2.males
3.one X and one Y chromosome.
4. two X chromosomes 
5. a very common trait in humans and frequently used to explain X-linked disorders.[8] Between seven and ten percent of men and 0.49% to 1% of women are affected. Its commonness may be explained by its relatively benign nature. It is also known as daltonism.
6.Females with one copy of the mutated gene are carriers. X-linked inheritance means that the gene causing the trait or the disorder is located on the X chromosome. Females have two X chromosomes while males have one X and one Y chromosome.
Explanation:
 
        
             
        
        
        
Answer:
Chemical Energy!
Explanation:
A Battery is made of chemical energy!