When sea water freezes, the ice is riddled with brine-filled channels which sustain sympagic organisms such as bacteria, algae, copepods and annelids, which in turn provide food for animals such as krill and specialised fish like the Bald notothen, fed upon in turn by larger animals such as Emperor penguins and Minke whales.

When the algae are present in high concentrations, the water appears to be discolored or murky, varying in color from purple to almost pink, normally being red or green.

When phosphates are introduced into water systems, higher concentrations cause increased growth of algae and plants.

When algae die they sink to the bottom where they are decomposed and the nutrients contained in organic matter are converted into inorganic form by bacteria.

When the algae die or are eaten, neuro-and hepatotoxins are released which can kill animals and may pose a threat to humans.

When added in small amounts to pool water or industrial water systems, the chlorine atoms hydrolyze from the rest of the molecule forming hypochlorous acid ( HOCl ) which acts as a general biocide killing germs, micro-organisms, algae, and so on.

When sea water freezes, the ice is riddled with brine-filled channels which sustain sympagic organisms such as bacteria, algae, copepods and annelids, which in turn provide food for animals such as krill and specialised fish like the Bald notothen, fed upon in turn by larger animals such as Emperor penguins and Minke whales.

When the pair is ready to spawn, they will choose an appropriate medium upon which to lay the eggs and spend one to two days picking off detritus and algae from the surface.

When the algae die, bacteria feed and their populations explode, robbing the water of oxygen.

When Misty has a migrane, she goes to Dr. Touchet, who tells her about the Jain Buddhists, the Essene Jews, and the early Christians, and gives her some capsules which he claims contain " green algae mostly, some white willow bark, a little bee pollen.

When taken from the ocean it is usually encrusted with coralline algae and inhabited by a multitude of marine organisms.

When the oxygen quantity produced by the algae is inexplicably reduced, the crew of Mars-1 investigate ; a crew consisting of Quinn Burchenal ( Tom Sizemore ), an agnostic geneticist, Bud Chantillas ( Terence Stamp ), an aging philosophical scientist and surgeon, systems engineer Robby Gallagher ( Val Kilmer ), commander Kate Bowman ( Carrie-Anne Moss ), pilot Ted Santen ( Benjamin Bratt ), and terraforming scientist Chip Pettengill ( Simon Baker ).

When used for the extraction of food oils, typical raw materials are nuts, seeds and algae, which are supplied to the press in a continuous feed.

When his eyes began to focus, he saw Jess charging at him with a pitchfork.

When he was eight he began violin lessons.

When Johnny Mercer and Harold Arlen began their collaboration in 1940, Mercer, like Arlen, had several substantial film songs to his credit, among them `` Hooray For Hollywood '', `` Ride, Tenderfoot, Ride '', `` Have You Got Any Castles, Baby??

When Thompson and her daughter began a correspondence which included fervent verses from Pantasaph, Mrs. King felt a proper Victorian alarm.

When the young biologist, Dr. Ballard, began to show interest in our daughter Elizabeth, this induced a corresponding interest, on our part, in him.

When the negotiations began, his quarrel with the king of France was temporarily in abeyance, and he had no intention of reviving it so long as there was hope that French money would come to pay the troops who, under Charles of Valois, the papal vicar of Tuscany, were so valuable in the crusade against the Colonna cardinals and their Sicilian allies.

When the Korean war began, on June 25, 1950, the anniversary of the day Custer had gone down fighting at the Little Big Horn and the day the regiment had assaulted the beachhead of Leyte during World War 2,, the 7th Cavalry was not in the best fighting condition.

When the winter tour began at Los Angeles last January there was no one in sight to challenge Palmer's towering prestige.

When dam construction began in 1933, fewer than 600 boats used these waters ; ;

When a fisherman brought her up in his arms, still, small, as if she were a child asleep, I began to shudder with a terrible excitement, almost triumphant, that I still cannot account for.

When it became apparent that Johnson would lose his seat, an effort began by ally George W. Jones to put forward Johnson's name for governor.

When people started to study scientifically how to fly, people began to understand the basics of air and aerodynamics.

When blacks began singing adapted versions of these hymns, they were called Negro spirituals.

When the North Tower was struck at 8: 46 a. m., many executives began evacuating their employees from the upper floors of the South Tower.

When Sultan Murad V began to show signs of paranoia, madness and continuous fainting and vomiting even on the day of his coronation and threw himself into a pool yelling at his guards to protect his life, they were afraid the public would become outraged and revolt to bring the former Sultan back.

When emulators of 1980s video game consoles began to appear on home computers in the late 1990s, the Atari 7800 was one of the last to be emulated.

When the original digital signature generating software was turned over to the Atari community, development of new Atari 7800 titles began.

When the trade association began, it had seven members and its main goal was to eliminate all duties and restrictions on the majority of their trade within 12 years.

Beethoven's friend Anton Schindler, later said: " When he started working on the fourth movement the struggle began as never before.

When pro-reform forces came into power in the spring 1997, an ambitious economic reform package, including introduction of a currency board regime, was agreed to with the International Monetary Fund and the World Bank, and the economy began to stabilise.

When pro-reform forces came into power in the spring 1997, an ambitious economic reform package, including introduction of a currency board regime, was agreed to with the International Monetary Fund and the World Bank, and the economy began to stabilise.

When Hitler's chief engineer, Fritz Todt, began opening the new autobahn ( highways ) in 1935, many of the bridges and service stations were " bold examples of modernism " – among those submitting designs was Mies van der Rohe.

When Selig was only three, Marie began taking him and his older brother, Jerry, to Borchert Field, where the minor league Milwaukee Brewers played.

When the Luftwaffe began bombing Moscow, Pasternak immediately began to serve as a fire warden on the roof of the writer's building on Lavrushinski Street.

When Lindburgh saw the crudeness of Carrel's machinery, he offered to build new equipment for the scientist.

When the University of Heidelberg hired Robert Bunsen in 1852, the authorities promised to build him a new laboratory building.

When bankers in Enid refused to lend him more money to build his planes, he moved to Wichita.

When the Air Force project wound down, the Lab turned their attention to an effort to build a version of the Whirlwind using transistors in place of vacuum tubes.

When released in 1982, the Camira initially generated good sales, which later declined because buyers considered the 1. 6-litre engine underpowered, and the car's build and ride quality below-average.

When James Smithson died and left his estate to the U. S. government to build an institution of learning, congress wanted to appropriate the money for other purposes.

When players run out of hexagons to build the island, the game is over.

When the people of Quanzhou, Fujian could not raise enough money to build a bridge, Guanyin changed into a beautiful maiden.

When he came into view, waves of sound began to build throughout the stadium, rising to a roar, then to a thunder.

When PTS awarded four licenses for the 3rd generation mobile networks in December 2000, Telia was not among the winners, but later established an agreement to build a 3G network jointly with Tele2 using Tele2's licence.

When William II became emperor in 1888, he discarded Bismark, began using bellicose language, and planned to build a navy to rival Britain's.

When the state later established the Development of Regional Impact study process, Disney, through the District, was able to avoid the paperwork and streamline the process to build theme parks and other attractions.

When Alexander Dubček was three, the family moved to the Soviet Union, in part to help build socialism and in part because jobs were scarce in Czechoslovakia.

When automated tools are used, the tests are often initiated by the same process that generates the build itself.

When bales are used to build or insulate buildings, the straw bales are commonly finished with earthen plaster.

When energy is transferred from one trophic level to the next, typically only ten percent is used to build new biomass.

When the Union army was finally able to build its bridges and cross under fire, urban combat resulted in the city on December 11 – 12.

When a laser printer or copier is operated for a long period of time in a small, poorly ventilated space, these gases can build up to levels at which the odor of ozone or irritation may be noticed.

When a pipeline is built, the construction project not only covers the civil work to lay the pipeline and build the pump / compressor stations, it also has to cover all the work related to the installation of the field devices that will support remote operation.

When the Hampden lease expired, Downing received permission to build further west to take advantage of recent real estate developments.

When sparrows returned in the spring, they could not find houses to build nest on, so they had to do so in forests.

When the Lermers are finally reunited on their own homestead, they build their house with a pressurized room for Peggy.

When their lead designer, Chuck Peddle, told Tramiel that calculators were a dead end and computers were the future, Tramiel told him to build one to prove the point.

When the user takes in a fresh breath, some of the previously exhaled air which remains in the snorkel is recycled into the lungs, reducing breathing efficiency and causing a build up of carbon dioxide in the blood, which can result in hypercapnia.