Answer: The correct answer for the fill in the blank is osmosis.
Osmosis is defined as the movement of solvent (like water) from a region where the concentration of solute is lower to a region where the concentration of solute is higher though a semipermeable membrane. 
In other words, it is the water movement from an area where its ( water ) concentration is higher to an area where its concentration is lower. 
This process does not require any energy as water is moving along the concentration gradient.  
 
        
                    
             
        
        
        
It is true, it does release hydrogen ions in a water base.
        
                    
             
        
        
        
Answer:
DNA checking
2.after few days it's growth rate was so great
 
        
             
        
        
        
Answer:
astronomical unit (AU) and light years
Explanation: