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2. Water aeration - Wikipedia

   en.wikipedia.org/wiki/Water_aeration

   Oxygen can be driven into the water when the wind disturbs the surface of the water body and natural aeration can also occur through a movement of water caused by an incoming stream, waterfall, or even a strong flood. In large water bodies in temperate climates, autumn turn-over can introduce oxygen rich water into the oxygen-poor hypolimnion.

3. 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.

4. Shark Tank season 6 - Wikipedia

   en.wikipedia.org/wiki/Shark_Tank_season_6

   Sharks: Mark, Daymond, Kevin, Lori, Robert "Sleeping Baby" sleepwear for newborns that imitates the protection of the womb so they don't wake as easily (YES); "Hammer & Nails" a masculine nail salon (NO); "Amber" a cellphone charging station (NO); "Bombas" quality athletic socks (YES); Update on: "Mark & Barbara's All Stars" Mark, Barbara, and some of their top investments [KaZAM (Episode 424 ...

5. Hippo water roller - Wikipedia

   en.wikipedia.org/wiki/Hippo_water_roller

   The newly designed Utility Cap allows users to conveniently and hygienically draw water without contaminating the contents of the drum and ensures hygienic storage of clean water. It can be replaced with a regular bottle cap if damaged or lost. The steel handle allows the roller to be pushed or pulled over difficult and very rough terrain.

6. Water bottle heart - Wikipedia

   en.wikipedia.org/wiki/Water_bottle_heart

   Water Bottle Heart is a descriptive term used in radiology to describe the appearance of the cardiac silhouette on a chest X-ray when it resembles the shape of a water bottle. This sign is associated with pericardial effusion , a medical condition characterized by the accumulation of fluid in the pericardial cavity surrounding the heart.

7. 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.