I've looked us up ever since you posted it the only thing I can come up with is letter A because it talks a lot about Mountain chains that talks a lot about the ocean floor and the Hawaiian stuff so try a
        
                    
             
        
        
        
Answer:
Heritability is important for natural and artificial selection because a trait must be heritable for them to take place. ... Variations that exist in every population are the basis for natural selection. The differences in organisms come from different genetic material.
Explanation:
 
        
             
        
        
        
Answer:378
Explanation: 378
have been cloned and
 The other 207 loci have been mapped out, the true gene identities have yet to be determined.
 
        
             
        
        
        
h2o is water  and c2o is carbon  dioxide :) 
Hope I was help :D