How Earth got to be the only known planet to host life in the universe. 🌍 engineering
. This is the period when nearly all animal phyla suddenly—in geological terms, at least—appeared in the fossil record.
This eon also saw several transitions between greenhouse Earth and icehouse Earth conditions. Some of these transitions are characterized by mass extinction events, like the, wherein about 85 percent of marine life on Earth died off and oxygen levels plummeted. In about 250 million years from now, all of the continents will have merged back into a supercontinent and eventually split apart again about 250 million years after that.
Those microbes will also be fighting for the last remaining pools of water left on the planet since the increased temperature will also boil away the Earth's oceans. Any remaining water will have to exist in small pockets at the poles or in underground aquifers. toward Mars, but if not, the planet will end its life here as it is swallowed up by the expanding sun.
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