Answer :
Final answer:
The vadose zone is also known as the Zone of Aeration, which is above the water table where the soil is not saturated with water.
Explanation:
The term for the zone in which water is in the process of percolating into the ground, often called the "vadose zone", is b) Zone of Aeration. The Zone of Aeration is above the water table where the soil and rock pores are not saturated with water and typically contain air. Below this zone lies the Zone of Saturation, where the pores are completely filled with water. The boundary between these two zones is the water table. Porosity and permeability are crucial properties of these zones that influence groundwater movement; porous rocks have a high percentage of pore space, while permeability refers to how easily the water can move through those pores.
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