Answer: it acts as a water filter as groundwater moves through it
Explanation:
Soil is a medium in which life is sustained through plant growth, the recycling of matter and nutrients, and the purification and cycling of water. Soil can act as a sponge to purify water, and thus plays a role in water quality.
<span>Tap water is one of the three test conditions of the independent variable, the type of water.</span>
Light speed in water is 2.25 times 10^5 m/s so the index of refraction is higher than the index of refraction of light in a vacuum which is 1.0. (speed in vacuum for light is 300,000 km/s)
Index of refraction of light in water is 3.0 time 10^5 m/s divided by 2.25 times 10^5 m/s = 1.33.
Hope this is what you wanted.
