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Dust that had been floating around in space begain to collect together. Because these particles have gravity the collection of dust grew and grew until it formed our earth.
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RNA molecules are the first signs of life and are able to self replicate in nature.
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The fist example of multicellular organisms is cyanobacteria. Though this is the first example of a multicellular organism, multicellular organisms have evolved independent of each other at least 46 times.
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Cyanobacteria started production oxygen and over millions of years the buildup of oxygen in the atmosphere made the earth more sustainable.
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The earliest know eukaryotes are acritarchs. These are also the most common fossils of the late Proterozoic.
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About 85% of all marine life went extinct. The two main causes of this are the cooling of the earth and lowering of the sea level.
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Around 75% of all life died. The lack of oxygen in the sea resulted in almost all marine life dieing and reefs did not recover until almost 100 million years later.
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Pangaea was a supercontinent that was surrounded by the ocean Panthalassa. This supercontinent spanned the early Permian period until the early Jurassic period.
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Almost all marine life died and 70% of terrestrial vertebrates died. It is the only mass extinction of insects know to have happened.
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This wiped out nearly half of all life. The possible reasons for this is either climate change or an impact.
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Because of the constant movement of tectonic plates the supercontinent Pangaea begain to break apart 200 million years ago.
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This extinction killed the dinosaurs. It is thought to be caused by a meteor impact which led to climate change.
