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The most abundant gas in the atmosphere is nitrogen. It accounts for 78 percent of the greenhouse gases in the atmosphere and is the most common natural element on Earth. More »

www.reference.com Science Earth Science Atmosphere

The most abundant metal on Earth is aluminum. Aluminum is the third most abundant element in the Earth's crust, and makes up 8 percent of it by parts per million. More »

www.reference.com Science Chemistry Organic Chemistry

The most abundant type of ribonucleic acid (RNA) is ribosomal RNA, or rRNA. It constitutes around 85 to 90 percent of total RNA in a cell. More »

www.reference.com Science Biology Molecular Biology & DNA
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The most abundant gas in the Earth's atmosphere is nitrogen. Nitrogen makes up 78 percent of the Earth's atmosphere, and it is a permanent gas, which means that its percentage does not change on a daily basis. The rest o... More »

www.reference.com Science Earth Science Atmosphere

In dry air that does not contain pollution, the predominant gas is nitrogen, which makes up 78 percent of the atmosphere. The next two most voluminous gases are oxygen (21 percent) and argon (1 percent). Other gases appe... More »

www.reference.com Science Earth Science Atmosphere

Nitrogen is the most abundant element, comprising about 78% of the earth's atmosphere. Oxygen is the second most common element, at 21%, followed by argon at 0.9%. These three gases - nitrogen, oxygen and argon - are kno... More »

www.reference.com Science Earth Science Atmosphere

About 78 percent of the Earth's atmosphere consists of nitrogen, and oxygen makes up 21 percent. The remaining 1 percent is a combination of argon, water, carbon dioxide and other gases. The Earth's atmosphere is the onl... More »

www.reference.com Science Earth Science Atmosphere