Because they provide the needed compounds that are necessary for the process of photosynthesis to undego.
Photosynthesis is the normal function among plants which create and synthesize sunlight, water and carbon dioxide into glucose and needed materials for cell processes. The ongoing process is needed and unique for every autotrophs because these mechanism is vital for every living organism to survive.
        
             
        
        
        
The Answer is c) <span>No, the shell would not be able to heal. </span>
        
                    
             
        
        
        
Answer:lakes and swamps 
Explanation:any thing that is not man made 
 
        
             
        
        
        
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