Answer:
c the changing culture brought about social unrest
Explanation:
<span><span>Porosity is the amount of empty space in a rock or other earth material (like sand) - in other words, it's how much water a material can hold.
Permeability refers to how well water flows through a material - the flow is controlled by how large the pores are and how well connected the pores are in a given object.</span><span>Therefore, there these are two primary factors that limit the movement and the amount of water (or other fluids) retained in rocks/sedimentary materials.</span></span>
Answer:
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Explanation:
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Valley glaciers are formed when a glacier travels across and down a slope, carving the valley by the action of scouring.
