Plant Gas In its experiments,Kepplers team used sealed chambers that contained the same concentration of oxygen that Earths atmosphere has.They measured the amounts of methane that were released by both living plants;and dried plant material,such as fallen leaves. Living plants growing at their normal temperatures released as much as 370 nanograms of methane per gram of plant tissue per hour.Methane emissions tripled when living and dead plant was exposed to sunlight. The new finding is an interesting observation, says Jennifer Y.King,a biogeochemist at the University of Minnesota in St.Paul3.Because some types of soil microbes consume methane,they may prevent plant-produced methane from reaching the atmosphere.Field tests will be needed to assess the plants influence,she notes. the Max Planck Institute for Nuclear Physics in Heidelberg,Germany:马克思普朗克核物理研究所,位于德国海德堡。海德堡系德国西南部城市,在巴登一符腾堡州的内卡河畔。海德堡大学是德国历史最悠久的大学。 St.Paul:圣保罗,美国明尼苏达州首府。 What was scientists understanding of methane? B It was not a greenhouse gas. D It traps more heat than any other greenhouse gas. A a oxygen-free environment. C a carbon dioxide-free environment. Which statement is true of the methane emissions of plants in the experiment? B I.iving plants release less methane than dried plants at the same temperature. D The higher the temperature,the greater the amount of methane emissions. A Plants growing in soil release methane. C Soil microbes consume methane. What is the beneficial point of some microbes consuming plant-produced methane? B Methane is turned into a fertilizer. D Air becomes cleaner.
怎样轻松摆脱“节后忧虑症”(双语)
漫画图说:我的新年计划(双语)
最新研究:散播流言也有好处?!(双语)
对话超模 探寻骨瘦如柴的秘密(双语)
三只小猪和大灰狼
热门事件学英语:关于校车安全的英语表达
梁实秋译 莎士比亚全集3 温莎的风流妇人
这个情人节 送什么给“他”?
美国年轻人看的励志英语文章
情人节约会指南:美眉们必须回避的四类型男
梁实秋译 莎士比亚全集1 暴风雨
伊索寓言——老 鬣 狗
掩耳盗铃
披着狮皮的驴The ass in the lions skin
懒汉海利
双语美文:西方情人节的传统
淘宝商城更名天猫 名字取自Tmall谐音
双语阅读:世界最小婴儿健康成长
伊索寓言之受伤的狼和精明的羊
75%的人会揭发上司不法行为(双语)
盘点2011年最受关注的英语词汇和名字(双语)
蒙牛纯牛奶强致癌物:黄曲霉素病毒(中英文)
强盗新郎
盘点2011年度步入婚姻殿堂的明星夫妻
小驴儿
双语:情人节表白秘籍 教你写封甜蜜情书
水浒故事:倒拔垂杨柳
情人节约会指南:经典妙语帮你“俘获芳心”
BBC:IE浏览器用户智商低?
有关清明节的英语作文
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |