volcanic outgassing ---> carbon dioxide
comets and meteoroids---> icy debris
a major component of modern atmosphere---> nitrogen
What do you mean by volcanic outgassing?
The eruption of a volcano ejected gas from inside the earth into the atmosphere. This is a process called outgassing, which continues to this day. Most of the gas was composed of carbon dioxide and water vapor. As the surface cooled, water vapor condensed to form part of the Earth's oceans. Comets may also have brought water and complex organic molecules to the Earth's environment.
Volcanic activity is an important factor in planetary habitability. This is because volcanic gas emissions help maintain a moderate and livable temperature for the planet by regulating the atmosphere by circulating gases such as carbon dioxide between the atmosphere and the mantle.
Moisture, caulking, grease, and adhesives are the most common sources, but metals and glass can also release gas from cracks and contaminants. Outgassing rates increase at higher temperatures as vapor pressure and chemical kinetics increase.
Learn more about Volcanoes here: https://brainly.com/question/24799048
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