Water intake is essential in the prevention of heat related injuries
 
        
             
        
        
        
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The effect of an external physical factor on cell division is clearly seen in density-dependent inhibition, a phenomenon in which crowded cells stop dividing. ... When cells have formed a complete single layer, they stop dividing (density-dependent inhibition).
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On April 13, 2029, Apoptosis will pass Earth closer than geosynchronous communication satellites, but will come no closer than 31,200 kilometres (19,400 mi) above Earth's surface.
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 4 cells will be made with 4 chromosomes each
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Two things that Characterize the practice of science is empirical evidence and community consensus. Hope this helps.