Answer:
Major element
Explanation:
The six most common element are living thing carbon,hydrogen,oxygen,nitrogen,phosphorus and sulfur.
 
        
             
        
        
        
Answer:
This is an example of founder effect. 
Explanation:
Founder effect may be illustrated as the loss of genetic variation in a novel small population originated from the original population. The concept was initially presented by Ernst Mayr. It can be seen that genetic diversity has got reduced in the population of iguana due to the result of the flood that has washed all the iguana without webbed feet into the sea.  
The new population has got inclined from the small iguana population. Thus, the iguana population is regarded as an illustration of the founder effect.  
 
        
                    
             
        
        
        
Por lo tanto, la proporción de ADN no codificante aumenta con el tamaño del genoma más rápidamente en las no bacterias que en las bacterias. Esto es consistente con el hecho de que la mayor parte del ADN nuclear eucariota no codifica genes, mientras que la mayoría de genes procariotas, virales y orgánulos sí lo son.