Question

 What percentage of the earth's atmosphere is oxygen?

Answer Oxygen (O2) is the second largest component of the earth's atmosphere, making up 20.95 percent of its composition. Nitrogen (N2) makes up the largest proportion at 78.08 percent, while Argon, Neon... Read More »
http://www.answerbag.com/q_view/1931405

Top Q&A For: What percentage of the earth's atmosphere is ox...

When did oxygen first enter the earth's atmosphere?

Oxygen was first produced on Earth sometime between 2.6 and 2.7 billion years ago. This occurred when a variety of algae, known as cyanobacteria, came into being. These cyanobacteria perform photos... Read More »
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Does photosynthesis produce oxygen in our atmosphere?

Photosynthesis releases oxygen into the Earth's atmosphere through tiny openings on the leaves of plants called stomatas. Photosynthesis is the main source of oxygen and helps to sustain life on Ea... Read More »
http://www.answerbag.com/q_view/2239549

Does oxygen escape our atmosphere into space?

Oxygen is leaving the Earth's atmosphere constantly. The Earth's magnetic field propels the oxygen out of the atmosphere. Scientists say the amount of oxygen traveling into space is small and is no... Read More »
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The Hazards of Breathing in an Oxygen-Enriched Atmosphere?

The use of pure oxygen is a fad that has risen in popularity due to the appearance of oxygen bars. While many claim using pure oxygen produces noticeable positive effects, such as headache relief o... Read More »
http://www.ehow.com/list_7353984_hazards-breathing-oxygen_enriched-atmosphere.html


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