In 2001, organic cotton made up only 0.03 percent of global cotton production, according to the Organic Trade Association.
在2001年，根据有机交易协会的统计，有机棉仅占全球棉花产品市场的百分之0.03。
2
Moreover, because gas is frequently encountered in association with oil, the production, refinement, transportation, and storage of crude oil is also a source of methane emissions.
此外，由于天然气常与石油混在一起，原油生产、提炼、运输和储存也是一个甲烷排放来源。
3
U.S. lumber production peaked at 40.5 billion board feet in 2005 and plunged to 23.4 billion in 2009, according to Western Wood Products Association and Southern Forest Products Association estimates.