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Artificial seawater (abbreviated ASW) is a mixture of dissolved mineral salts (and sometimes vitamins) that simulates seawater. Artificial seawater is primarily used in marine biology and in marine and reef aquaria , and allows the easy preparation of media appropriate for marine organisms (including algae , bacteria , plants and animals ).
More than 90% of Sri Lanka's surface lies on Precambrian strata, some of it dating back 2 billion years. [6] The granulite facies rocks of the Highland Series (gneisses, sillimanite-graphite gneisses, quartzite, marbles, and some charnockites) make up most of the island and the amphibolite facies gneisses, granites, and granitic gneisses of the Vijayan Series occur in the eastern and ...
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium ( Na +
These conditions are suitable for initial training in the critical survival skills, and include swimming pools, training tanks, aquarium tanks and some shallow and protected shoreline areas. [5] Open water is unrestricted water such as a sea, lake or flooded quarry , where the diver has unobstructed direct vertical access to the surface of the ...
The Loris, found only in Sri Lanka and South India, is related to the Lemurs of Madagascar. The connection to India led to a commonality of species, e.g. freshwater fish, the now extinct Sri Lankan Gaur (Bibos sinhaleyus) and the Sri Lankan Lion (Panthera leo sinhaleyus). [5] The island was connected, off and on at least 17 times in the past ...
For practical reasons salinity is usually related to the sum of masses of a subset of these dissolved chemical constituents (so-called solution salinity), rather than to the unknown mass of salts that gave rise to this composition (an exception is when artificial seawater is created).
Diyawanna Lake (Sinhala: දියවන්නා ඔය, Tamil: தியவன்ன ஓயா) or Parliament Lake, is one of the lakes within Sri Jayawardenepura Kotte, Sri Lanka. [ 1 ] It is quite popular as the Sri Lankan Parliament Building was built on an artificial island at the centre of the lake.
Rivers that flow out into the sea deteriorate the sea water. Oil spills, chemicals and non-biodegradable waste such as plastic also decrease the quality of Sri Lanka's seawater. [12] Microplastic pollution has resulted in a drastic reduction of fish stocks. [13] In 2000, only 25% of the households in Sri Lanka got their water through pipes.