In 1650, an individual calculated that the earth was about 6,000 years old. since then what has happened to scientists of the earths age? a. scientists now beleive the earth is much younger. b. scientists are now less sure of the earths age c. scientsts now believe the earth is much older d. scientists agree with the estimate from 1650

1/0.14nm = 10^10/1.4 a lot

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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