<h2>its true</h2><h2>the ecological system of organization is a gigantic scale of all sorts of sh*tt</h2>
        
             
        
        
        
Answer:
They need backups.
Explanation:
If the organism only has one food source they will use up that resource and eventually the organism will deplete due to lack of food.
 
        
             
        
        
        
3)The amount of air that mixes with the gas stream