The basic repeating unit of nucleic acids are known as nucleotides
 
        
                    
             
        
        
        
The answer is B. Grassland
        
             
        
        
        
Answer: C) Prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
Prokaryotes are the organisms that do not have a membrane bound nucleus, mitochondria and other organelle. They ranges in size of diameter from 0.1–5.0 µm.
Example:<em> Escherichia coli, Sulfolobus acidocaldarius archeobacterium </em>
 Decomposers, play an important role in nitrogen cycle. Nitrogen gas is converted to nitrate compound by nitrogen fixing bacteria which are present in root nodules of leguminous plants.
Example: <em>Azotobacter </em>
 
        
                    
             
        
        
        
Answer:
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Explanation:
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<span>It stores substances such as food, water, and wastes</span>