The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.
</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
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Answer:
osmosis? I hope I'm right
 
        
                    
             
        
        
        
Answer:
H20 is not a product of combustion 
 
        
             
        
        
        
The correct answer is b. Release of short-chain fatty acids.
The intestinal microflora is complex ecosystem which contains over 400 bacterial species.That microflora is  capable of fermenting indigestible carbohydrates (dietary fiber) to short-chain fatty acids such as acetate, propionate, and butyrate.
 
        
             
        
        
        
Answer:
i think its B 
Explanation:
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