All organisms depend on C. ENERGY
        
             
        
        
        
Fiber is made out of cellulose. Our body doesn't synthesize an enzyme that digests cellulose(cellulase) that's why we can't metabolize it. fiber is good because it reaches the colon undigested and helps the intestinal fauna and can even prevent colon cancer
 
        
             
        
        
        
The correct answer is FALSE
        
             
        
        
        
That they can no longer breed together to reproduce fertile offspring.