Examples of deep sea in the following topics:
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- A piezophile (also called a barophile) is an organism which thrives at high pressures, such as deep sea bacteria or archaea.
- Since the 19th century however, research has demonstrated that significant biodiversity exists in the deep sea.
- Zones of the deep sea include the mesopelagic zone, the bathyal zone, the abyssal zone, and the hadal zone.
- A piezophile, also called a barophile, is an organism which thrives at high pressures, such as deep sea bacteria or archaea.
- These organisms have adapted in novel ways to become tolerant of these pressures in order to colonize deep sea habitats.
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- Recently there has been the discovery of abundant marine life in the deep sea, especially around hydrothermal vents.
- Large deep sea communities of marine life have been discovered around black and white smokers – hydrothermal vents emitting typical chemicals toxic to humans and most of the vertebrates.
- Marine life also flourishes around seamounts that rise from the depths, where fish and other sea life congregate to spawn and feed.
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- They are typically found deep below the surface of the ocean.
- In most shallow water and terrestrial ecosystems, energy comes from sunlight, but in the deep ocean there is total darkness.
- As mineral resources on land have become depleted, mining companies have turned to deep sea geothermal vents to extract metals and sulfur.
- Although the technology for deep sea mining is new, conservation biologists are concerned that mining hydrothermal vents will destroy these fragile and unique ecosystems.
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- Chemoautotrophs are able to thrive in very harsh environments, such as deep sea vents, due to their lack of dependence on outside sources of carbon other than carbon dioxide.
- Chemoautotrophs include nitrogen fixing bacteria located in the soil, iron oxidizing bacteria located in the lava beds, and sulfur oxidizing bacteria located in deep sea thermal vents.
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- An example of this is chemolithotrophic bacteria in deep sea worms or plastids, which are organelles within plant cells that may have evolved from photolithotrophic cyanobacteria-like organisms.
- An example of this is chemolithotrophic bacteria in deep sea worms or plastids, which are organelles within plant cells that may have evolved from photolithotrophic cyanobacteria-like organisms .
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- A member of the class Epsilonproteobacteria occurs as an endosymbiont in the large gills of the deep water sea snail Alviniconcha hessleri.
- Often the epsilonproteobacteria living in hydrothermal deep sea-vents exhibit chemolithotrophic features, and they are able to meet their energy needs by reducing or oxidixing chemical compounds.
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- Examples of water waves can be found in the sea, a lake or a bath tub.
- Waves are generated by wind passing over the surface of the sea.
- Deep water corresponds with a water depth larger than half the wavelength, as is a common case in the sea and ocean.
- In deep water, longer-period waves propagate faster and transport their energy faster.
- The deep-water group velocity is half the phase velocity.
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- Halophiles thrive in places such as the Great Salt Lake , Owens Lake in California, evaporation ponds, and the Dead Sea - places that provide an inhospitable environment to most lifeforms.
- These are the primary inhabitants of salt lakes, inland seas, and evaporating ponds of seawater.
- The red color of deep salterns is due to the carotenoids (organic pigment) in these archaea.
- Salt builds up along the Dead Sea.
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- However, the ice sheets that covered these routes were scarred with deep crevasses on their surfaces, making travel across them dangerous.
- The second route went through the present-day Bab-el-Mandeb Strait on the Red Sea (at that time, with a much lower sea level and narrower extension).
- These early humans crossed the Red Sea about 70 millennia ago, populating the rest of the world in the process.
- Today at the Gate of Grief, the Red Sea is about 12 miles (20 kilometers) wide, but 50,000 years ago it was much narrower and sea levels were 70 meters lower.
- This has been seen as evidence that humans may have crossed the Red Sea in search of food sources on new beaches.
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- In most measurements and calculations, the atmospheric pressure is considered to be constant at 1 atm or 101,325 Pa, which is the atmospheric pressure under standard conditions at sea level.
- Depending on the altitude relative to sea level, the actual atmospheric pressure will be less at higher altitudes and more at lower altitudes as the weight of air molecules in the immediate atmosphere changes, thus changing the effective atmospheric pressure.
- In this equation p0 is the pressure at sea level (101,325 Pa), g is the acceleration due to gravity, M is the mass of a single molecule of air, R is the universal gas constant, T0 is the standard temperature at sea level, and h is the height relative to sea level.
- For example, tire pressure and blood pressure are gauge pressures by convention, while atmospheric pressures, deep vacuum pressures, and altimeter pressures must be absolute.