Results for oxygen

The Origin of Oxygen in Earth's' Atmosphere Scientific American.
Climate, volcanism, plate tectonics all played a key role in regulating the oxygen level during various time periods. Yet no one has come up with a rock-solid test to determine the precise oxygen content of the atmosphere at any given time from the geologic record.
Periodic Table of Elements: Los Alamos National Laboratory.
Oxygen, which is very reactive, is a component of hundreds of thousands of organic compounds and combines with most elements. Plants and animals rely on oxygen for respiration. Hospitals frequently prescribe oxygen for patients with respiratory ailments. Oxygen has nine isotopes.
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oxygen Discovery, Symbol, Properties, Uses, Facts Britannica.
In 177580, French chemist Antoine-Laurent Lavoisie r, with remarkable insight, interpreted the role of oxygen in respiration as well as combustion, discarding the phlogiston theory, which had been accepted up to that time; he noted its tendency to form acids by combining with many different substances and accordingly named the element oxygen oxygène from the Greek words for acid former.
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