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.
It is easier for water to move through bigger spaces. Gravel has very large spaces so water moves through it very fast. On the other hand, the spaces in clay are so small that almost no water moves through. Some layers of rock are so solid that they don't let water move through; this is called an impermeable layer. Others are very crumbly or have lots of big cracks. If the cracks are connected to each other, then water can move thorough the rock. Permeability decreases moving left to right due to soil and rock type.