A ÁGUA...............UM BEM A DEFENDER
" If all earth's water fit in a gallon jug, available fresh water would equal just over a tablespoon - less than half of one percent of the total. About 97 percent of the planet's water is seawater; another 2 percent is locked in icecaps and glaciers. Vast reserves of fresh water underlie earth's surface, but much of it is too deep to economically tap". Special Edition, National Geographic - Water, the power, promise, and turmoil of North America's fresh water. (um nº especial da NG, décadas atrás)
AC