The greater the value, the more rapidly oxygen is depleted in the stream. This means less oxygen is available to higher forms of aquatic life. The consequences of high BOD are the same as those for low dissolved oxygen: aquatic organisms become stressed, suffocate, and die. ...
Thus, once legislation has been approved by the appropriate Community bod, little can be achieved by parliamentary means. Some marketing bod in New Zealand has dubbed this trip Mission Impossible. Dianne Thompson, the Ley's outside relations bod, is keen to emphasise the five themes of the Ley...
Like the other Mars mission probes,China's spacecraft will take seven months to reach the red planet.Tianwen-1 will look for underground water and signs of possible ancient life .(1)The great cheer in the control room meant B.A.the Long March-5 rocket took offB.the Mars mission p...
Biochemical oxygen demand (BOD) represents the amount of dissolved oxygen that would be consumed if all the organic matter in one litre of water were oxidized by microorganisms. More value of BOD means the water sample is polluted with organic matter. Show More ...
In an embodiment (not shown) the sludge from the clarifier may be treated with spent gas from the ozonation zone, prior to being returned to zone 11. The apparatus may comprise means for controlling the amount of ozone produced by the generator in relation to the water flow rate, means ...
WATER The second most important constituent of the biosphere is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. This is only a ti... 查看完整题目与答案 超常儿童 查看完整题目与答案 Text 3 Over the pa...
Efforts are being made to reduce BOD concentrations inwater through various means. Industries are implementing better wastewater treatment processes to remove organic pollutants before discharging into water bodies. Agricultural practices are being modified to minimize the use of chemicals and prevent runoff...
Eutrophication in water bodies leads to a) high DO. b) low BOD. c) low DO. d) optimum dissolved oxygen. Eutrophication: When large amounts of nutrients, such as nitrates and phosphates (from agricultural runoff and/or manure), enter bodies of...
B.O.D. i.e. biological oxygen demand is a measure level of pollution caused by organic biodegradable material in water. In case B.O.D. level is low, this means that water contains less of organic material it.
I know that I will be able show others that I am worth it by proving them that I can be able to do the impossible, even when it starts to become callous, I am willing to work my way back up by any means necessary for my success in graduating and being a good student. I also ...