By ruch14, Updated
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I formed about 4.6 BYBP!
The Earth is thought to have been formed by collisions in the giant disc-shaped cloud of material that also formed the Sun.
Outgassing is gross!
Outgassing has a big effect on the earth because it was responsible for the early formation of the earth's atmosphere, and provided a large quantity of water vapor.
The first organisms on Earth were most likely single-celled prokaryotes that were probably genetically similar to the organisms belonging to the domain Archaea.
There was predicted life on Earth about 3.5 BYBP!
Scientists have discovered possibly the earliest signs of life on Earth remains of bacteria that are located in Western Australia.
The bacteria discovered was just about 3.5 BYBP !
The atmosphere we have today is very different from the Earth’s early atmosphere. When the planet first cooled down 4.4 billion years ago, volcanoes spewed out steam, carbon dioxide and ammonia, and it was 100 times as dense as today’s atmosphere.
The earliest bacteria, known as cyanobacteria, were probably the first oxygen-producing organisms on Earth. Approximately 2.7 to 2.2 billion years ago, they released large amounts of oxygen and sequestered the carbon dioxide.
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