Description:
Of all the water on earth, 97.5% is salt water, and of the remaining 2.5% fresh water, some 70% is frozen in the polar ice caps. The other 30% is mostly present as soil moisture or lies in underground aquifers. In the end, less than 1% of the world's fres
Hits:
47 |
Rating:
( 5.0 )
by 1 users
