In this question, there are no options given to choose from. So i would answer this question based on my knowledge. The most likely cause of the observed variation is adaptation and evolution. The birds of that island adapted to the food source and then they evolved as per the requirement of the place and food source.
        
             
        
        
        
<span>An ecosystem consists of a population of organisms and its
physical environment, and a population is made up of many different
communities of organisms. Every one of the creatures of similar species
living  together that live in a particular biological system are known
as a populace The people in the populace contend with one  another for
sustenance, settling space, and mates.</span>
        
             
        
        
        
Answer:
 the procedure aims to replace the stem cells in the bone marrow the source of new red blood cells with healthy stem cells from a matching donor
 
        
             
        
        
        
Answer:
The reason why zebra and wildebeest graze in harmony together is because they each eat different parts of the same type of grass. Because wildebeest have no natural leader, the migrating herd often splits up into smaller herds that circle the main, mega-herd, going in different directions.
Explanation:
hope this helps!! (:
 
        
             
        
        
        
Ok. Will do! Can i have brainliest tho