Answer:
Cation-exchange capacity is a measure of how many cations can be retained on soil particle surfaces. Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules, but allow these to exchange with other positively charged particles in the surrounding soil water
 
        
             
        
        
        
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The polarity of the water molecule helps it to cohere to nearby water molecules, forming a skin over it.
        
             
        
        
        
Each parent give you 23 chromosomes