what is mean by liquid hydrogen and where it is found ?
define ozone layer ?
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The ozone layer is a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light. "Ozone holes" are popular names for areas of damage to the ozone layer. ... Ozone layer damage is more like a really thin patch than a hole.
Liquid hydrogen (LH2 or LH2) is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. ... As for any gas, storing it as liquid takes less space than storing it as a gas at normal temperature and pressure.
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Tamil is older than Sanskrit and there is record of 'Tamil Sangam' dating back 4,500 years,
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