What is the history of the Earth's atmosphere?
The country had three atmospheres, each of which was different in the chemical composition. The first of the Earth's atmosphere, created when the planet was still very young, was primarily hydrogen and helium. This atmosphere is about 4.57 billion years old and was short-term-the molten bark and solar wind scattered this layer. Hydrogen and helium are not difficult enough to create a stable atmosphere unless the planet is very massive - these elements are more likely to get escape speed during random thermal turnover. This is part of the reason why hydrogen and helium are very rare today in the Earth's atmosphere. Over time, the density of these volcanic gases has become sufficient to create the atmosphere of the second earth, especially on carbon dioxide and water vapor. There was some nitrogen, but barely any free oxygen. It is similar to the venus' phagrated atmosphere, which is 96.5% of carbon dioxide and 3.5% nitrogen. The atmosphere of the Earth at this point had something else with Venus - it was about 100 times thicker than today.The pressure on the surface would be similar to pressure below 1 km (0.62 million) water.
The Earth's atmosphere slowly began to rarify because carbon dioxide was dissolved in the oceans and precipitated like carbonates. This covered most of the country in the carbon layer and set a stage for early life.
Life in the form of Archaea appeared 3.5 billion years ago. About 2.7 billion years ago, they were joined by microbes called Cyanobacteria. Cyanobacteria were the first phototropic oxygen -producing organisms and slowly began to suck carbon dioxide from the atmosphere and release oxygen. Cyanobacteria took a long time to start, but between 2.7 and 2.2 billion years, during an early paleoproterosis, these microbes converted the Earth's atmosphere from anoxic (oxygen) atmosphere into oxic (containing oxygen). This is called great oxidation or usually oxygen disaster.
oxidation event is sometimes considered to be a disaster, thereforethat for most of the living lives at that time, oxygen was toxic. Therefore, oxygen disaster was one of the first major bulk disappearances. As an advantage, however, we got another of the atmosphere of the country, the one we have to survive today.