This was a puzzle because, in general, bigger animals are usually much better at surviving the island's extremely cold winters.
Mr Wicks says that only the heaviest industrial users would be affected by an extremely cold winter, if one does occur.
Basic chemistry predicts that ammonia and methane should naturally coexist in varying quantities unless they are in extremely cold or hot environments.
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Jo Webber, of the NHS Confederation, accepts that a spate of extremely cold weather could make matters worse, although she believes the NHS will cope with whatever is thrown at it.
"Where it's extremely cold it's not uncommon for people to drink all day long, " said Val Smith, president of International Wine and Spirits, which provided the data on per-capita alcohol consumption.
Mr Maharaj said there were still some South Africans who "sit with their dogs in front in a van or truck with a worker at the back in pouring rain or extremely cold weather".
After the severe weather, a cold-weather system could bring snow and freezing rain to the Midwest, beginning Wednesday, and the threat of extremely cold weather in the northern Plains states and Upper Midwest, particularly on Thursday.
Both extremely hot and cold temperatures stress our electrical grid to the breaking point, and there is precious little in reserve.
By definition it applies to those who frequently drive in stop-and-go traffic, live in extremely hot or cold climates or dusty areas or who tow a trailer (in other words, the majority of motorists).
The front baffle couples with Nordic birch, another cold climate wood with an extremely tight grain, to project the most ideal sound reverberation properties.
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Just as its difficult in the US for people to pack their things and head for North Dakota to work for companies exploiting the Bakken shale, many of the regions in Russia with the highest wages are extremely remote and difficult to get to (not to mention really cold in the winter).
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Exposure to extreme cold: the Antarctic Plateau, which will be crossed, is the world's largest and coldest desert with extremely low humidity and the expedition will involve prolonged periods of exposure to extreme cold below -70C.
Qantas Chief Executive Geoff Dixon has tried to dampen hopes a little further by telling people to "take a cold shower and settle down, " while the airline's unions are "extremely concerned" about the potential job losses.
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