Answer:
3. Size could
4. Beak's are advantageous because they have to be fit to eat the seeds that they need
Explanation:
size can affect because the bigger birds can fight the smaller birds off when they are eating the same product. Even with same beaks bigger birds will have an advantage.
 
        
             
        
        
        
Answer:
Realized niche
Explanation:
Realized niche: 
is a set of conditions used by specie after interactions such as competition, predation etc with other species. It can aslo be defined as the actual range of habitats occupied by a species 
 
        
             
        
        
        
Answer:
we are not allowed to provide you answers for a test or quiz its breaking brainly's tos aka terms of service and community guidelines 
Explanation: