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ultarviolet
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Sun For Our Life
Hillazza
@Hillazza
(25)
•
Indonesia
30 Dec 09
Everybody knows that sun is main resource for mankind. Sun is resulting light ultraviolet that use for perform Vitamin D under skin's surface. Sun also make plants have photosynthetic which resulting useful gas for us and many...
gas
plants
sun
ultarviolet
1 response
