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2. Biochemical oxygen demand - Wikipedia

   en.wikipedia.org/wiki/Biochemical_oxygen_demand

   BOD test bottles at the laboratory of a wastewater treatment plant. Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period.

3. Water - Wikipedia

   en.wikipedia.org/wiki/Water

   Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [19]).

4. List of words having different meanings in American and ...

   en.wikipedia.org/wiki/List_of_words_having...

   (n.) waste products from fish processing (heads, tails, blood etc.) often used for shark fishing (v.) to spread fish entrails etc. in the hope of luring sharks. "We chummed the water all morning, but never spotted any dorsal fins." Has some cross-over usage metaphorically in non-fishing situations. cider

5. Urinal (health care) - Wikipedia

   en.wikipedia.org/wiki/Urinal_(health_care)

   A male urinal bottle. A urinal, urine bottle, or male urinal is a bottle for urination. [1] It is most frequently used in health care for patients who find it impossible or difficult to get out of bed during sleep. Urinals allow the patient who has cognition and movement of their arms to urinate without the help of staff.

6. Solar water disinfection - Wikipedia

   en.wikipedia.org/wiki/Solar_water_disinfection

   Solar water disinfection, in short SODIS, is a type of portable water purification that uses solar energy to make biologically-contaminated (e.g. bacteria, viruses, protozoa and worms) water safe to drink. Water contaminated with non-biological agents such as toxic chemicals or heavy metals require additional steps to make the water safe to drink.

7. Distilled water - Wikipedia

   en.wikipedia.org/wiki/Distilled_water

   Bottle for distilled water in the Real Farmacia in Madrid. Distilled water is water that has been boiled into vapor and condensed back into liquid in a separate container. Impurities in the original water that do not boil below or near the boiling point of water remain in the original container. Thus, distilled water is a type of purified water.