gcmd_keyword : OXYGEN COMPOUNDS>MOLECULAR OXYGEN

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publications
parent	ATMOSPHERIC CHEMISTRY>OXYGEN COMPOUNDS
gcmd_keywords

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definition	Oxygen (O2) is found on Earth as a gas and constitutes about 20.8% of the air we breathe. Elemental molecular oxygen consists of two oxygen atoms bonded together. A photochemical reaction of oxygen is (ultimately) responsible for the production of ozone in the stratosphere. Oxygen concentrations found in ice core samples have been used to determine past atmospheric levels of oxygen and helped in determining past climates. [Nature; v351; 217-219; 1991.] [Nature; v365; 143-147; 1993.]
identifier	61f4f3d0-7895-4cce-94e3-d249001d5ee8
label	MOLECULAR OXYGEN
parent_identifier	4cc9b4fa-5097-447f-914c-eb90820938c6
GCMD Metadata	61f4f3d0-7895-4cce-94e3-d249001d5ee8
Ancestors	MOLECULAR OXYGEN < OXYGEN COMPOUNDS < ATMOSPHERIC CHEMISTRY < ATMOSPHERE < EARTH SCIENCE < Science Keywords