Answer:
pindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.
Explanation:
 
        
             
        
        
        
Heat passes through li<span>quids by the process of convection. 
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Hope this helps !!! ^_^ !!!
        
             
        
        
        
<span>When the landmasses are again collected together in a specific area
The Pangea theory supports the theory of plate tectonics because it is based on the idea that all the present continents were one super-continent. For reasons still unknown, the super-continent got separated and created separate smaller continents. This theory also supports the fact that this movement will continue until the day arrives when all the smaller continents will again merge in a different configuration to create another super-continent. </span>
        
             
        
        
        
The greatest cause of the worldwide loss of species is human activity. I think
        
                    
             
        
        
        
Its C. Whenever you perform an experiment you want to make sure its as controled as it can possibly be.