In the countries where winter is long and dark like Russia, children are exposed to ultraviolet baths to provide vitamin DSunday, February 27, 2011
ULTRAVIOLET BATH
In the countries where winter is long and dark like Russia, children are exposed to ultraviolet baths to provide vitamin D
PECULIAR GRASS
In the cities where there is no a lot of water, humans use green colored rocks to simulate grass in their front yards.
Thursday, February 24, 2011
Wednesday, February 23, 2011
Sunday, February 20, 2011
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