The upper layer of the soil is the unsaturated zone, where water is present in varying amounts that change over time, but does not saturate the soil. Below this layer is the saturated zone, where all of the pores, cracks, and spaces between rock particles are saturated with water.
The statement that is a key difference between market economy and mixed market economy is this: Market economies have no government influence while mixed market economies are loosely regulated by the government. Hope this is the answer that you are looking for.
