1.

The size of a red blood cell is\[0.000007\text{ }m\] . The size of a plant cell is\[0.00001275\text{ }m\]. Compare them.

A.  \[\frac{1}{2}\]                                                  
B.  \[\frac{1}{4}\]                                  
C.  \[\frac{1}{5}\]                                  
D.         \[-\frac{1}{5}\]                
Answer» B.  \[\frac{1}{4}\]                                  


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