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On a ____________________ Artic island , work started in a ____________________ ____________________ where millions of crop varieties will be ____________________ in case of global catastrophy . The global ____________________ ____________________ will be ____________________ in a ____________________ ____________________ ____________________ 300 meters underground in the ____________________ of Norway's Spitsbergen island .

Dominic Hughes reports : ? A thousand kilometres from the North Pole , Spitsbergen may be ____________________ isolated in cold , but it's the perfect place for the largest world agricultural seed bank . Deep low one of the island's mountain's walls ____________________ with ____________________ . The seeds will be stored down here in high security in high blast proof doors at around minus 20ºC . Some ____________________ have already been collected and the plan is to ____________________ around one and a half billion seeds , three million variety plants for the growth of food . There are already more than a thousand seed food across the world ? but , will this be ____________________ final ____________________ against some kind of catastrophy that could ____________________ global food ____________________ , nuclear war , natural disaster or the effect of climate change ?