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| {{Status|Canon}}
| | Water is a common chemical substance that is essential to all known forms of life. In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor. About 1,460 teratonnes (Tt) of water covers 71% of the Earth's surface, mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation.[2] Some of the Earth's water is contained within man-made and natural objects near the Earth's surface such as water towers, animal and plant bodies, manufactured products, and food stores. |
| {{Wikipedia}}
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| [[File:H5G-Csurdon Sea.png|thumb|[[Csurdon Sea]] on [[Sanghelios]].]]
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| '''Water''', chemical formula '''H<sub>2</sub>O''', is a common chemical substance. Its chemical make-up is a bond of two [[hydrogen]] atoms and a single [[oxygen]].
| | On [[Earth]], Saltwater oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers and lakes 0.6%. Water moves continually through a cycle of evaporation or transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Winds carry water vapor over land at the same rate as runoff into the sea, about 36 Tt per year. Over land, evaporation and transpiration contribute another 71 Tt per year to the precipitation of 107 Tt per year over land. Some water is trapped for varying periods in ice caps, glaciers, aquifers, or in lakes, sometimes providing fresh water for life on land. Clean, fresh water is essential to human and other life. However, in many parts of the world - especially developing countries - it is in short supply. Water is a solvent for a wide variety of chemical substances. |
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| ==Universe and lore==
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| Water is found throughout the [[Milky Way|galaxy]] on a number of [[planet]]s with a variety of climates. Water on these planets are mainly found in [[:Category:Bodies of water|large bodies]]. [[Shield world]]s and [[Halo Array|Halo installations]], both built by the [[Ecumene]], also contained large water bodies. Some beings on these worlds, like the [[Sea worm]] or the [[Sanghelios]] [[Unidentified aquatic creature|creature]], live predominately in the water.
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| Sentient species have utilized water for a number of purposes. [[Human]]s and [[Sangheili]] have both developed [[Human marine craft|vehicles specifically to traverse]] those water bodies. Human and [[Covenant]] engineers have also used water for electricity and [[Plasma]] generation, like [[Ütközet hydroelectric power plant|on]] [[Reach]]{{Ref/Level|HR|[[Nightfall]]}} or [[Hydro-processing center|on]] [[Buwan]].{{Ref/Level|HR|[[Penance]]}} Humans also sell forms of water like with [[H2Oh! Vitamin Water]].{{Ref/Map|HI|[[Bazaar]]}}
| | ==In Halo== |
| | *Found in six of the ten levels of [[Halo: Combat Evolved]], nine of [[Halo 2]]'s levels, and almost all of [[Halo 3]]'s levels, in some form or another. |
| | *Mentioned in [[Halo: Contact Harvest]]. Private Jenkins drinks it during some of the training exercises, when the company goes on runs, and during breaks. |
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| The [[Global Water Campaign]] and its [[GWC Trans-African Pipelines]] were designed to transport the still relatively clean melt water from [[Mount Kilimanjaro]] across the entire [[Africa]]n continent. Multiple facilities of the GWC, including [[A2 Hydroelectric Facility]] and [[Voi Municipal Water Pump House 03]], were sites of combat during the [[Battle of Earth]].{{Ref/Level|H3|[[Sierra 117]]}}{{Ref/Level|H3|[[Tsavo Highway]]}}
| | [[Category: Materials]] |
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| ==Gameplay==
| | [[Category: Beverages]] |
| [[File:H3_GruntInWater.jpg|thumb|Bodies and objects will float in water.]]
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| Water is seen in plain sight during the majority of all the Halo games. It appears in six of the ten levels of ''[[Halo: Combat Evolved]]'', nine of ''[[Halo 2]]''{{'}}s levels, in three ''[[Halo 3]]'' levels, and in seven maps in ''[[Halo: Reach]]''. It is further seen in ''[[Halo Wars 2]]'', ''[[Halo 4]]'', and ''[[Halo 5: Guardians]]''.
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| In ''Halo 3'' and ''Halo: Reach'', bodies and objects will float on water for a while before sinking.
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| Water is often utilized as a death barrier in some maps and the player is killed upon hitting the water or when hitting the water becomes inevitable. However in some cases on [[Forge World]] and [[Forge Island]], there are a few water areas that won't kill the player at all.
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| ==Gallery==
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| <gallery>
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| File:H3_Valhalla_Lake.jpg|Water on [[Installation 00]].
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| File:Water.jpg|A barrel of water.
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| File:H3_GhostTownOverhead.jpg|[[Ghost Town|A ruined water purification facility]] for the Global Water Campaign.
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| File:H5G - ARC.jpg|The [[Sundark Sea]] being held back by [[Forerunner]] [[Energy shielding|shields]].
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| </gallery>
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| ==Sources==
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| {{Ref/Sources}}
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| [[Category:Beverages]] | |
| [[Category:Chemical compounds]]
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