Answer:
The yellow leaf was not exposed to the sun so it can't produce sugar.
Explanation:
The yellow region of the leaf didn't produce sugar because it wasn't exposed to sunlight. Part of the leaf was exposed to the sun, thus this leaf produced sugar, while the yellow part of the leaf did not because it was not exposed to the sunlight.
 
        
             
        
        
        
Krill, snails and abalones are primary consumers
        
             
        
        
        
Answer:
The yellow allele could start to become dominant, or the ones without that allele would die out.
 
        
             
        
        
        
Spermatogenesis take place in the female egg.