Simple. Take oxygen and leave carbon dioxide. Take protein, fat and leave urea.
22:25, 30 April 2012
A geological phenomenon where rocks move without human or ...
A tornado is a violently rotating column of air that is in ...
A map showing just enough geographic information to permit ...
GOOS, co-sponsored by IOC/UNESCO, WMO, UNEP and ICSU, is a ...
Occurs when solid, liquid, or gaseous volcanic materials ...
The number of molecules of CO2 liberated for each molecule ...
0
词条
词汇
2
关注者
1
3
15
7
51
11
60