The orange material that coats the base of this stream is ferric hydroxide (Fe(OH)3). It is characteristic of streams in areas polluted by acid mine drainage where oxygen-rich water comes in contact with pyrite-rich (FeS2) coal. The reaction responsible for the creation of this iron compound is an example of which of the following? A. hydration B. hydrolysis C. oxidation D. dissolution

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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