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en.wikipedia.org/wiki/Atmosphere_of_Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity. The atmosphere of ...

www.space.com/17683-earth-atmosphere.html

Sep 19, 2012 ... Earth is the only planet in the solar system with an atmosphere that can sustain life. The blanket of gases not only contains the air that we ...

www.thoughtco.com/most-abundant-gas-in-the-earths-atmosphere-604006

Feb 9, 2017 ... The Earth's atmosphere or air is composed of several gases. One gas is much more abundant than any other. Can you guess which one it is?

climate.ncsu.edu/edu/k12/.AtmComposition

Aug 9, 2013 ... The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the ...

scifun.chem.wisc.edu/chemweek/pdf/airgas.pdf

The air around us is a mixture of gases, mainly nitrogen and oxygen, but ... atmosphere in chemical processing (14%), electronics (15%), and, in liquid form, as a ...

www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/oils/changesrev4.shtml

The Earth's atmosphere has remained much the same for the past 200 million years. The pie chart shows the proportions of the main gases in the atmosphere.

www.bbc.co.uk/schools/gcsebitesize/science/aqa/earth/earthsatmosphererev1.shtml

The Earth's atmosphere has remained much the same for the past 200 million years. The pie chart shows the proportions of the main gases in the atmosphere.

www.universetoday.com/49849/gases-in-the-atmosphere

[/caption]There are different gases in the atmosphere. There's nitrogen (the most abundant of them all), oxygen, and argon. There are of course a lot more but ...

www.ecoca.ro/meteo/tutorial/Atmosphere/Older/Atmospheric_Gases.html

Atmospheric Gases. There are a number of atmospheric gases which make up air. The main gases are nitrogen and oxygen, which make up 78% and 21% of ...

www.weather-climate.org.uk/03.php

Air is a mixture of gases and aerosols that composes the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen ( 21%).