Is a measure of the speed at which water can travel through porous soil or bedrock

Permeability

Explanation:

Permeability can be define as the speed with which the water, air and nutrients are transmitted into the soil. The soil permeability is affected by the soil porosity. More the porosity the more will be the movement of substances in the soil. The soil permeability is important for the supply of water, nutrients and air to the plant roots that can be important for the growth of plant.