It is not what you thing it is but the answer is true
        
                    
             
        
        
        
Because the different environments permit some organisms to thrive, while others cannot. ... Similarly, a fish (extremely suited to its aquatic environment) can't survive out of water. A characteristic which allows growth in one environment will not necessarily allow growth in another.
 
        
             
        
        
        
Answer:   A
Explanation:
Carrying Capacity because it is showing how many ferns the rainforest can support.