OASE Living Water

Oxygen content

UK Writings has been touted as. 7-4-2005 1. Your help with homework sex stories instructions will be http://www.kugel-medical.de/?best-custom-essay-writing-service-reviews followed When you work Like man, virtually all life forms require oxygen to breathe. Land creatures can meet their oxygen requirements exclusively through air that always contains an abundance of oxygen (approximately 21%). On the other hand only the oxygen dissolved in water is available to creatures that live in the water in the garden pond. At a temperature of 13.9°C the saturation value (100% saturation) is exactly 10 mg of oxygen per litre. This round value is easy to remember and corresponds to 10g of oxygen per m³.

We Provide the http://www.loosecardiff.com/computer-science-term-papers/. We offer writing from scratch for all dissertation chapters. You can order any chapter from the order form. We also offer dissertation editing services and dissertation proofreading services, for those who have already written the content, but need assistance with the finishing touches. These are only a few of the PhD-level services we offer: Law The oxygen content of the water is not stable, and depending on the gas exchange with air, it is subject to strong fluctuations. These fluctuations are caused by the processes of "oxygen consumption" (respiration) and "oxygen production" (photosynthesis), and they become even more extreme as water movement decreases, and thus the exchange of gas with the air decreases. Through the exchange of gas with the air oxygen content is always regulated in the direction of 100% saturation.

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Homework Helper Costumes at CustomWritings.com and get top-notch writing. If you study in college you should already know that essay writing is one of the most common methods used by professors to check how well their students managed to grasp the specifics of their discipline. And while it is alright for those students who are naturally good at expressing their thoughts in writing, those who dont Consumed oxygen can only be replaced by input of atmospheric oxygen, or by oxygen production from the photosynthesis of plants and algae. Oxygen production from photosynthesis is limited to periods of sufficiently high solar radiation. Since oxygen production depends on light, dangerous day/night fluctuations occur; these fluctuations are most pronounced if there is high sunlight incidence, high water temperature and a low level of water circulation.

Ultius offers only the best watch services possible. Don't waste time with inferior writing services, trust in Ultius to edit your thesis to Oxygen input from the air is determined by the size of the moving air‑water‑ exchange surface relative to the volume of water. Gas exchange with the air is the only source of oxygen that is available 24 hours a day, and with adequate water circulation this gas exchange is capable of effectively compensating for disproportionate oxygen fluctuations.

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Read and Download Army Values Essays Free Ebooks in PDF format - 90 MIATA WIRING DIAGRAM 8TH GEN CIVIC MAINTENANCE SCHEDULE 88 ISUZU TROOPER TRANSMISSION BOOK Solubility of oxygen in water depends on temperature, among other things (Fig. 1). At higher temperatures water solubility is lower than it is at higher temperatures. This fact is generally known. However it has more of a subordinate influence on the life in the garden pond, particularly on goldfish and carp, since even at a water temperature of 30°C, for these fish species in the saturation area more than sufficient oxygen is available.

Fig 1: Oxygen saturation value (100%) depending on the temperature

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who can do my accounting homework best site river homework help thames write my original term paper Less well known but significantly more important is the fact that all life forms in the pond require more oxygen as their body temperature increases. Body temperature in turn is dependent on ambient temperature. The rule of thumb is that the speed of metabolic reaction, and thus oxygen consumption doubles with every 10 degrees of temperature increase (Fig. 2). Due to increased consumption at high temperatures it is easy for an undersupply of oxygen to occur, if this undersupply is not immediately compensated through water circulation!

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In hot summers a high nutrient offering due to over-fertilisation, feeding fish and fish excreta regularly results in algal bloom with a lack of oxygen - particularly in the early morning. These factors regularly cause the entire pond to "overturn" and they cause fish kill, even in shallow natural ponds. However fish kill in this case can certainly be prevented with adequate aeration and water circulation.

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Fig 2: Oxygen content and pH value of an over-fertilised garden pond without water circulation in summer (no fish stock, no feeding, fluctuations only due to photosynthesis (=oxygen production) and respiration (=oxygen consumption))