Earth's Fresh Water


The fresh water on earth is of enormous importance.

The water cycle, which is the movement of water through the hydrosphere, begins with evaporation. The sunlight makes the water on Earth’s surface to evaporate, which then enters to the air as a gas. Also, it can be done from the loss of water from leaves. Once the water enters the atmosphere as gas, it goes back to liquid state and forms clouds. When the water droplets in the clouds get large, it becomes precipitation and goes down to the surface of the Earth again. That precipitation goes to body of water and it repeats its cycle again.

96.5%, which is the majority of water in Earth comes from the oceans. Remaining 1% comes from the saline ground and lake water. Other 2.5% is the fresh water. From that 2.5%, 68.6% of fresh water is glaciers and ice caps, 30.1% is groundwater and remaining 1.3% is surface and other fresh water. Those surface and other freshwater comes from, 73.1% ice and snow and 20.1% from lakes. Remaining portion is shared by atmospheric, biological, river, swamp and soil waters. Earth’s fresh water is water that contains less than 0.2% of dissolved salt. It is usually found in rivers, lakes and groundwater and the fresh water is only found in 2.5% of Earth’s entire water. Moreover, about 2% is frozen away in glaciers. Therefore only about 0.5% of those fresh water is available to both human and animals because most of the fresh water in Earth is atmospheric vapor, salt water, and icecaps. However, even the remaining portion of water is getting polluted as the population increases.




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