definition of aphotic zone
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Aphotic zone The aphotic zone (aphotic from Greek prefix ἀ-+ φῶς without light) is the portion of a lake or ocean where there is little or no sunlight. It is formally defined as the depths beyond which less than 1% of sunlight penetrates. Consequently, bioluminescence is essentially the only light found in this
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neritic zone neritic zone (neritic province) The shallow water, or near-shore, marine zone extending from the low-tide level to a depth of 200 m. This zone covers about 8% of the total ocean floor. It is the area most populated by benthic organisms, due to the penetration of sunlight to these shallow depths.
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Abiotic Factors of the Neritic Zone Photos.com/Photos.com/Getty Images. The neritic zone is the portion of the world's oceans stretching from the edge of the intertidal zone to approximately the edge of the continental shelf. It forms part of the epipelagic zone, the 200 meters closest to the surface, which is also known as the sunlight zone.et the life here is heavily influenced by the abiotic factors present --- that is, the factors that influence the diversity and quantity of life in an ecosystem that are themselves nonbiological or nonliving. Other People Are Reading.
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What is APHOTIC ZONE? Definition of APHOTIC ZONE: part of the ocean where there is very little or no light, generally under certain depth approximately under 1500 meters. Under this depth only light source is bioluminescence. Depth of aphotrophic zone can change according to the season of the year. APHOTIC ZONE: The aphotic zone is in the ocean depths where it receives no light..
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- Definition of EXCLUSIVE ECONOMIC ZONE. : the area of sea and seabed extending from the shore of a country claiming exclusive rights to it.ADVERTISEMENT. the area of sea and seabed extending from the shore of a country claiming exclusive rights to it.
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- Some of the possible common medical causes of Pimples on legs may include: 1  Insect Bites. 2  Cherry angiomas. 3  Pyogenic granulomas.  Granuloma 1  annulare. Syphilis. 2  Measeles. Tinea versicolor.  Viral 1  exanthema. Tuberous sclerosis. 2  Piebaldism. 3  Leprosy. Radiation  dermatitis.
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- 1 The photic zone, the only region where plants and organisms that depend on photosynthesis can live. 2  The aphotic zone, where light is too dim for photosynthesis so organisms there rely on detritus (bits of decaying plants and animal waste that float down from the photic zone).
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Neritic Zone: Definition, Organisms & Climate Since there is lots of sunlight in the neritic zone, green plants grow there, providing a high oxygen content to support the brilliant sea life we often see in shallow waters. The neritic zone is the most productive area of the ocean and is home to thousands of fish species.
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Photic zone The zone which extends from the base of the euphotic zone to about 200 metres is sometimes called the disphotic zone. While there is some light, it is insufficient for photosynthesis, or at least insufficient for photosynthesis at a rate greater than respiration.he bottommost zone, below the euphotic zone, is called the aphotic zone. Most deep ocean waters belong to this zone. The transparency of the water, which determines the depth of the photic zone, is measured simply with a Secchi disk.
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apsis 1. (Astronomy) Also called: apse either of two points lying at the extremities of an eccentric orbit of a planet, satellite, etc, such as the aphelion and perihelion of a planet or the apogee and perigee of the moon. The line of apsides connects two such points and is the principal axis of the orbit.
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Translations for NERITIC ZONE Neritic zone The neritic zone, also called coastal waters, the coastal ocean or the sublittoral zone, is the part of the ocean extending from the low tide mark to the edge of the continental shelf, with a relatively shallow depth extending to about 200 meters.
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Pelagic zone The word pelagic is derived from Greek πέλαγος (pelagos) , pélagos meaning open. Sea the pelagic zone can be thought of in terms of an imaginary cylinder or water column that goes from the surface of the sea almost to the. bottomhe pelagic zone can be contrasted with the benthic and demersal zones at the bottom of the sea. The benthic zone is the ecological region at the very bottom of the sea.
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Littoral zone Estuaries are also in the littoral zone. The littoral zone is the part of a sea, lake or river that is close to the shore. In coastal environments the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged.
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General Astronomy/Print version Definition of tropic for Students. 1  1 : either of two parallels of the earth's latitude of which one is about 231⁄2 degrees north of the equator and the other about 231⁄2 degrees south of the equator. 2  2 tropics plural often cap : the region lying between the Tropic of Cancer and the Tropic of Capricorn.
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- Temperate Zone. the part of the earth's surface lying between the tropic of Cancer and the Arctic Circle in the Northern Hemisphere or between the tropic of Capricorn and the Antarctic Circle in the Southern Hemisphere, and characterized by having a climate that is warm in the summer, cold in the winter, and moderate in the spring and fall.
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photic zone Photic zone definition, the upper layer of a body of water delineated by the depth to which enough sunlight can penetrate to permit photosynthesis. See more. Dictionary.com
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Benthic zone The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers. Organisms living in this zone are called benthos, e.g. the benthic invertebrate community, including crustaceans and polychaetes.
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Snap, Crackle, Pop: MRI Shows Why Joints Make Knuckle-Cracking Pop Sound Interlacing your fingers and bending them back separates the joints, making the well-known knuckle-cracking pop sound. Cracking your knuckles can be an idiosyncrasy or a way to release stress and tension felt in the joints.
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- The Dead Zone. The Gulf of Mexico hypoxic zone is a seasonal phenomena occurring in the northern Gulf of Mexico, from the mouth of the Mississippi River to beyond the Texas border. It is more commonly referred to as the Gulf of Mexico Dead Zone, because oxygen levels within the zone are too low to support marine life.
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Benthic zone The benthic zone is one of the ecological regions of a body of water. It comprises the bottom—such as the ocean floor or the bottom of a lake—the sediment surface, and some sub-surface layers. [view]. The benthic zone is the name given to the bottom of the sea or ocean, and sometmes also a lake bottom.
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- Benthic zone - Description. 1  The benthic region of the ocean begins at the shore line (intertidal or eulittoral zone) and extends downward along the surface of the continental shelf out to sea. [2] [not in citation given] The continental shelf is a gently sloping benthic region that extends away from the land mass.
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Pelagic zone The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth. The word pelagic is derived from Greek πέλαγος (pélagos), meaning 'open sea'.
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Neritic zone Written By: Neritic zone, shallow marine environment extending from mean low water down to 200-metre (660-foot) depths, generally corresponding to the continental shelf. Neritic waters are penetrated by varying amounts of sunlight, which permits photosynthesis by both planktonic and bottom-dwelling organisms.
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Amphidromic point The term amphidromic point derives from the Greek words amphi (around) and dromos (running), referring to the rotary tides running around them. The M 2 tidal constituent, the amplitude indicated by color. The white lines are cotidal lines spaced at phase intervals of 30° (a bit over 1 hr).
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What is the photic zone? Answered by The Community. Making the world better, one answer at a time. The photic zone (also known as the euphotic zone) is the name for the depth of water, be it in lake, sea or ocean, which is exposed to sufficient sunlight to allow photosynthesis to take place. It extends from the Atmosphere-ocean interface downward to a depth where the light intensity is 1% of that at the surface.
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apophatic Check your grammar now! Definition of apophatic. : of or relating to apophasis (see apophasis 2) : involving the practice of describing something by stating which characteristics it does not have an apophatic description It was a reactive consciousness, embedded mainly in an apophatic discourse.