Heinricher started Boo­Shoot Gardens in 1998. She realized early on what is just now beginning to be known to the rest of the world. It can be used to make fishing poles, skateboards, buildings, furniture, floors, and even clothing. An added bonus: Bamboo absorbs four times as much carbon dioxide as a group of hardwood trees and releases 35 percent more oxygen.

　　First she had to find a way to mass­produce the plants—a tough task, since bamboo flowers create seed only once every 50 to 100 years. And dividing a bamboo plant frequently kills it.

　　Heinricher appealed to Randy Burr, a tissue culture expert, to help her.“People kept telling us we'd never figure it out，” says Heinricher.“Others had worked on it for 27 years! I believed in what we were doing, though, so I just kept going.”

　　She was right to feel a sense of urgency. Bamboo forests are being rapidly used up, and a United Nations report showed that even though bamboo is highly renewable,_as many as half of the world's species are threatened with dying out.Heinricher knew that bamboo could make a significant impact on carbon emissions(排放)and world economies, but only if huge numbers could be produced. And that's just what she and Burr figured out after nine years of experiments—a way to grow millions of plants. By placing cuttings in test tubes with salts, vitamins, plant hormones, and seaweed gel, they got the plants to grow and then raised them in soil in greenhouses.

【2017届高考英语一轮复习课时作业17：Unit 2《Working the land》（人教版必修4湖北专用）】相关文章：

★ 【浙江专用】2014届高考英语一轮复习课时作业(三十八)选修8Unit 3《Inventors and inventions》

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修3 unit4《Astronomy》

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 8 A卷 Word版含解析

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：3（含解析）

★ 2017届高考英语二轮复习课时训练：22（含解析）

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（22）模块8 《Unit 22 Environmental Protection》（含解析） 北师大版必修1

★ 四川省2016届高考英语一轮复习课时作业（36） Module 6 War and Peacel 外研版选修6

★ 2014届高考英语一轮复习必修4参考答案（外研版）

★ 2017届高考英语二轮复习大题冲关秘籍语法填空：创新押题（含解析）

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修3 Unit 3 The Million Pound Bank Note