For many of their illnesses scientist and doctors haven't treated them before so they don't know how to treat them or exactly if the animal can handle the treatment
        
                    
             
        
        
        
Mutualism since the clown fish and the anemone both benefit from each other.
        
             
        
        
        
"different ears"
According to <span>Broadbent's  study, depending on which ear the stimulus was done, one of the channels were used. If both ears were used then there was a channel-swapping phenomenon that proved his theory of auditory attentional selection.</span>
        
             
        
        
        
The answer is lower because having to return to a pre disturbance size will likely affect its genetic variation to be lower compared to the original population where in its genetic variation will be greater compared to those in pre disturbance size.