A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>
        
                    
             
        
        
        
The answer to this question is "repairing old appliances"
        
             
        
        
        
For 2,000 mice living in a field,  the per capita growth rate  is mathematically given as
NT=0.4
<h3>What is the per capita growth rate (rmax) of mice over a month?</h3>
Generally,  the birth and death rate  is mathematically given as
BT=1000/2000
BT=0.5
Where
DT=200/2000
DT=0.1
In conclusion, per capita growth rate
NT=0.5-0.1
NT=0.4
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The procedure is called renal angiography. This procedure is done to check the quality of blood flow to the kidneys, check for blockages, narrowing of the blood vessels and lastly aneurysm. A dye is usually injected into the arteries for easier visualization.
        
             
        
        
        
Answer:
making hole in the same to get the new DNA into the cell