Water Map
作者:Seth Johnson
1. How much water is there?
1.1. Earth's freshwater source is about 3% freshwater
1.2. Surprisingly only 1% is usable water
1.3. 2% is Frozen in ice
2. Water Cycle
2.1. The water cycle is the conservation of water in the atmosphere
2.1.1. Evaporation is when liquid water is turned into a gas
2.1.2. Condensation is when water in a gas form transfers to liquid form
2.1.3. Precipitation is when liquid water in the atmosphere cools enough to be released from the atmosphere in a liquid form