单词：total content of organic carbon
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It seemed like a good ideabecause rivers and ponds in Bangladesh were contaminated with bacteria, Bangladeshis switched to wells. But soon after, in the early 80s, researchers realized those wells were harming Bangladeshis with a new poisonarsenic. T
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This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Chemistry goes to the University of Delawares Richard Heck, Purdues Ei-ichi Negishi and Hokkaido Universitys Akira Suzuki for their work in develop
Scientific American(十)月
AGRICULTURE REPORT - Study Points to Risk in Common Method of Enriching Soil By Jerilyn Watson / Broadcast: Mon, 12 Nov 2007 16:00:00 UTC This is the VOA Special English Agriculture Report. For more than half a century, many farmers worldwide have a
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Scientists: Save More Than Forests 科学家:拯救全球气候 不只是保护森林 Protecting the worlds forests is promoted as a way of reducing greenhouse gas emissions. Forests store a lot of carbon in both trees and soil, which helps mitigate
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AGRICULTURE REPORT - Food for Crops: How to Get the Most From Organic Fertilizer By Mario Ritter Broadcast: Tuesday, August 23, 2005 I'm Shep O'Neal with the VOA Special English Agriculture Report. Th
农业与发展
Organic food has no nutritional or health benefits over ordinary food, according to a major study published Wednesday. Organic food has no nutritional or health benefits over ordinary food, according to a major study published Wednesday. Researchers
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