avascularity  is the  option  term which  best   explain  why  nutrient   for  epithelial  cell   are  obtained  by   diffusion   from the   underling   connective  tissue.  Epithelial membrane  consist of   continuous   sheet  of  cell. one   or  more  layer  thick  and  are  attached  to  the   underlying  connective  tissue  by  a   basement  membrane. Nutrient  and   oxygen  reach  epithelial  membrane   by  diffusion   from  blood  vessel  which   are  located  in  the   connective  tissue   beneath the basemen  membrane
        
             
        
        
        
Answer:
DNA
Explanation:
The nucleus is a central placed organelle in eukaryotic cells. It is said to contain the "blueprint of life" known as the DNA. The DNA is a structure located in the nucleus of the cell that encodes information necessary for the growth and development of the organism. 
This information encoded by the deoxyribonucleic acid (DNA) of the cell includes how the organism will reproduce, hence, DNA is called the blueprint of life.
 
        
             
        
        
        
I had to put the answer in the image sorry
 
        
             
        
        
        
Answer:
i think is Destruction of coral 
 
        
                    
             
        
        
        
Answer:
I am leaning towards D because everything changes during Cell differentiation the functions changes and goes through many different cycles.
Explanation: