Question

Explain the origin of the Earth and atmosphere.

Answer 1

The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphereThe "second atmosphere" of the Planet emerges from the Planet itself. There were also volcanoes, so many than there are now, and the surface of the Earth was already growing.

Complete answer:
First we should know about the Earth atmosphere to answer this question. The Earth's atmosphere is composed of nitrogen, oxygen, and trace gases in such a thin gaseous film. It makes for a moderate temperature and protects against solar winds, cosmic rays, , and falling meteorites. It was safe enough to have nourished the creation of life across geological time.

Earth's original atmosphere was probably just hydrogen and helium, because these were the main gases in the dusty, gassy disk around the Sun from which the planets are formed. The Earth and its atmosphere were very hot. Molecules of hydrogen and helium move really fast, especially when warm.

The atmosphere initially composed of water, nitrogen, carbon dioxide, sulphur and noble gases, and formed by the condensation of ocean-forming water, the preservation of carbon in organic matter and carbonates, and the biogenic development of oxygen. The atmosphere of the Planet originally resulted from the inclusion of bodies among Mars and Jupiter from the asteroid belt near the end of terrestrial creation. Either the early atmosphere fled into space or was blown into orbit by the solar wind.
The earth was warm and low weight gases such as hydrogen and helium flew about at sufficient speed to counteract the pull of the gravity of the earth.

Note: A significant portion of $CO_2$ has sunk into the oceans. Finally, a basic type of bacteria was created that could survive on solar energy and carbon dioxide in the water, creating oxygen as a byproduct. Thus, oxygen appeared to rise up in the atmosphere, while the levels of carbon dioxide began to decline.