六合彩开奖结果

The Green Revolution has stagnated for key food crops in many regions of the world, according to a study published in Nature Communications by scientists with the University of Minnesota鈥檚 Institute on the Environment and 六合彩开奖结果.

Classified as: crops, Green Revolution, Ramankutty, University of Minnesota, yields
Category:
Published on: 21 Dec 2012
Back to top