Magnesium Phosphate is the answer
        
                    
             
        
        
        
The answer is flagella.
Flagella are tail-like structures which allow some unicellular organisms to move. Although their primary function is in locomotion, they can also serve as sensory organelles that are sensitive to chemicals or temperature of the environment. They can be found in all three domains - bacteria, archaea, and eukaryota:
- Bacterial flagella have a rotary motor at the base of each filament turning clockwise or counterclockwise
- Archaeal flagella look like bacterial flagella.
- Eukaryotic flagella are structurally complex cellular projections.
        
             
        
        
        
One reason is for safety! in case you get stranded in a body of water you can keep yourself afloat
        
             
        
        
        
Answer:
Similarly to their eukaryotic counterparts, bacterial chromosomes perform the complex task of efficiently compacting DNA while supporting gene regulation and proper DNA segregation. Chromosomes are thus shaped at multiple scales by a large number of proteins and DNA enzymes 
 
        
                    
             
        
        
        
3<span>. </span>Populations<span> and </span>samples<span> ... Although a statistician should clearly </span>define<span> the </span>population<span> he or she is dealing with, they may not be able to enumerate it exactly. For instance, in ordinary ... For taking a</span>sample<span> from a long </span>list<span> a compromise between strict theory and practicalities is known as a systematic random </span>sample<span>.</span>