Are you talking about the benthic zone?
        
             
        
        
        
Answer:
a) another living cell
Explanation:
"All living cells arise from pre-existing cells by division."
 
        
                    
             
        
        
        
Answer:
The nervous system communicates with the rest of the body through the nerves that branch off of the spine.
 
        
             
        
        
        
The site in a polynucleotide chain as to where the restriction enzyme cleaves nucleotides by hydrolyzing the phosphodiester bond between them.
        
             
        
        
        
Make a punnett square. The individuals are heretozygus (different) so their genotype is Pp. 
 P p
 _______
 P | PP | Pp |
 _______
 p | Pp | pp |
 _______ 
There is...
Genotype (genetics)
25% chance homozygus polkadot. (PP)
25% chance homozygus solid (pp)
50% chance heterozygus polkadot. (Pp)
Phenotype (physical trait)
75% chance polkadot
25% chance solid. 
The answer: C 
*sorry the punnett square is so weird looking :) i hope this was helpful.