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The layer of the Earth that contains water and ice such as oceans, seas, rivers, vapors, underground water etc. The hydrosphere in physical geography describes the combined mass of water found on, under, and over the surface of a planet.

The hydrosphere (from Greek ὕδωρ - hudōr, "water"[1] and σφαῖρα - sphaira, "sphere"[2]) in physical geography describes the combined mass of water found on, under, and over the surface of a planet.

The total mass of the Earth's hydrosphere is about 1.4 × 1018 tonnes, which is about 0.023% of the Earth's total mass. About 20 × 1012 tonnes of this is in the Earth's atmosphere (the volume of one tonne of water is approximately 1 cubic metre). Approximately 75% of the Earth's surface, an area of some 361 million square kilometres (139.5 million square miles), is covered by ocean. The average salinity of the Earth's oceans is about 35 grams of salt per kilogram of sea water (3.5%)
All the Earth's water.

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6y ago
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13y ago

The answer to the question you're looking for is The Water (as vapor or lakes) of the earth.

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Q: What is the Hydrosphere?
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