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- Earth's early atmosphere was mainly formed from gases released from volcanoes123. It probably contained425:
- A large amount of carbon dioxide
- Little or no oxygen
- Water vapour
- Small amounts of other gases, such as hydrogen sulfide, methane, ammonia, and helium
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.When Earth formed 4.6 billion years ago from a hot mix of gases and solids, it had almost no atmosphere. The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today’s atmosphere.forces.si.edu/atmosphere/02_02_01.htmlOne theory suggests that the early atmosphere came from intense volcanic activity, which released gases that made the early atmosphere very similar to the atmospheres of Mars and Venus today: a large amount of carbon dioxide little or no oxygen small amounts of other gases, such as ammonia and methane Volcanic activity also released water vapourwww.bbc.co.uk/bitesize/guides/zym2k2p/revision/1Gases in Earth's early atmosphere were limited to hydrogen, helium and hydrogen-containing compounds. The solar wind blew away this first atmosphere. The second atmosphere developed from gases released during volcanic eruptions. The current atmosphere began with photosynthetic cyanobacteria.sciencing.com/earths-first-atmosphere-contained-g…The early atmosphere probably contained:
- little or no oxygen
- a large amount of carbon dioxide
- water vapour
- small amounts of other gases, such as ammonia and methane
www.bbc.co.uk/bitesize/guides/zyd64qt/revision/1The early atmosphere probably contained:
- a large amount of carbon dioxide
- water vapour
- small amounts of other gases
www.bbc.co.uk/bitesize/guides/z82gng8/revision/4 - People also ask
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