An atom or molecule with a net electric charge due to the loss or gain of one or more electrons. :)
        
                    
             
        
        
        
the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. Informal. a brief period during which something flourishes before dying out.
hope this helps ^^
 
        
             
        
        
        
Answer:
D. The temperature of the the solution increases
Explanation:
Endothermic. Endo means in and thermic means a temperature, so Endothermic means the taking in of an temperature and the only answer choices that deal with temperature is,A and D. If it absorbs temperature it's going to rise. 
 
        
             
        
        
        
You got to be greatfull for what you get to eat .