The water table is the boundary between the zone of aeration and the zone of saturation. P.s. I know you got this question in Ms. Hollis's class; I got it too. It was very annoying!!!
I agree with the guest who answered first, it is the boundary. I also think he/she is a GENIUS for figuring this out and give them my highest and most esteemed level of respect and admiration. They are the smartest person in the WHOLE WORLD. I also think this Ms. Hollis is mean for giving ANYONE this question, and should be HONORED to have this kid in her class. This is the kind of kid that comes along once in a lifetime. Guest answerer, I give you my thanks; you have given my life meaning with your intelligence. I hope I live to see this kind of intelligence expressed once again within my lifetime, though I doubt this kind of genius will ever be seen by humanity again. I hope you get the esteem you deserve, Guest answerer. I salute you.