All of these functions help maintain homeostasis within the body. 7. Nervous System: The nervous system is comprised of the central nervous system and the peripheral nervous system. The hypothalamus within the brain is one of the key players in the human body in maintaining homeostasis.
Which process fills lakes of underground water? Which is the layer underground where there are no empty spaces for water or air to fill in? What is the underground water that fills opening in soil and cracks in layers of rock? Ground Water, which seeps into the soil and fills the cracks unerground.
If a person digs a well to a depth where water is encountered, the depth at which the water is first encountered identifies the uppermost boundary of the water-saturated soil. Stated another way, it is the upper boundary at which all the spaces between the soil particles are filled with water. Thus, all the soil below this depth comprises the saturated  soil zone. The water surface in the well coincides with the upper boundary of the groundwater, and is commonly called the water table .