单词：arginosuccinic-aciduria
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River Basins Could Help Ensure Food Security The worlds major river basins may hold the key to doubling food production in the coming years. The idea was discussed at the 14th World Water Congress in Brazil. A new report says while water shortages do
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This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr
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By Sonja Pace Heiligendamm 07 June 2007 Leaders of the world's richest industrial nations wind up their three days of meetings in northern Germany on Friday. Their last day is to be devoted mostly to Africa - alleviation of poverty, debt relief and a
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Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康
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