I was on a hike and read a plaque that said this area used to be completely covered by water. My question is, where did all that water go? Just absorbed into the ground? Evaporated?
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Ice age took water that used to be in oceans and put it on land. When ice melted, it made big lakes but then the water made its way back to the oceans by evaporating and rivers and such. Some water is still in ice in things like ice caps and glaciers but that is likely to at least partly melt due to human activity, meaning oceans will get higher and flood some of the land again. Some of it is also land that used to be squished under ice rising a bit now that the ice is off. It was a lot of ice.
Looking back further, the earth’s plates move around and you get stuff going up or down slowly over time. There are sea fossils on top of Everest from when it was underwater.
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