1.I think it went into the sand and the gravel.
2.I think after it rains it goes into the layers of the ground and is stored every where. I also think it represents it.
3. It could go into the ground but it won't get to the bedrock.
4. I think they do because the plants need ground water and we need plants.And we use wells to get water and that is ground water.
5. I think they use wells or they drill to it in the ground.
6. well it can move down and i think it can move left and right too.
7. At the beginning I thought it just evaporated when it went into the ground.