Q:
      
      
         
            
What is a process whereby an Ecosystem can renew itself? 
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) Succession         
         
Explanation: The process which wherein an Ecosystem may renew itself is known as Ecological Succession.
The time scale may be decades or a million of years after a mass extinction. 
It may be achieve over a period of time.
 
       
      
      
      
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