Simple. Take oxygen and leave carbon dioxide. Take protein, fat and leave urea.
22:25, 30 April 2012
Occurs when solid, liquid, or gaseous volcanic materials ...
A quasiperiodic crystal, or, in short, quasicrystal, is a ...
GOOS, co-sponsored by IOC/UNESCO, WMO, UNEP and ICSU, is a ...
The Great Blue Hole is a large underwater sinkhole off the ...
A tornado is a violently rotating column of air that is in ...
The number of molecules of CO2 liberated for each molecule ...
0
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