Claim: Water occurs in nature as ice.
Evidence: On Earth , 96.5 % of the planet 's crust water is found in seas and oceans , 1.7 % in groundwater , 1.7 % in glaciers and the ice caps of Antarctica and Greenland , a small fraction in other large water bodies , and 0.001 % in the air as vapor , clouds -LRB- formed of ice and liquid water suspended in air -RRB- , and precipitation.