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The Tibetan Plateau is called the 'Third Pole' because it:
Where is most of Earth's fresh water stored?
Assertion (A): Although Earth has a huge amount of water, only a very small part of it is easily available for human use. Reason (R): Almost all water is salty ocean water, and most of the fresh water is locked up as ice in glaciers and ice caps.
Assertion (A): Polar bears depend on the cryosphere for their survival. Reason (R): About 71% of Earth's surface is covered with water.
About 97% of all the water on Earth is salty water in the oceans.
In a model, 5000 L of water stands for all the water on Earth. About 3% of it is fresh water. Of this fresh water, about 69% is ice, about 30% is groundwater and the rest is surface water in lakes, rivers and swamps. How many litres of the model stand for surface fresh water?
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