[单项选择]{{B}}第三篇{{/B}}

{{B}}Underground Coal Fires -- a Looming Catastrophe{{/B}} Coal burning deep underground in China, India and Indonesia is threatening the environment and human life, scientists have warned. These large-scale underground blazes cause the ground temperature to heat up and kill surrounding vegetation, produce greenhouse gases and can even ignite forest fires, a panel of scientists told the annual meeting of the American Association for the Advancement of Science in Denver. The resulting release of poisonous elements like arsenic and mercury can also pollute local water sources and soils, they warned. "Coal fires are a global catastrophe," said Associate Professor Glenn Stracher of East Georgia College in Swainsboro, USA. But surprisingly few people know about them. Coal can heat up A. Annual consumption of coal in US. B. Annual consumption of coal in China. C. How long coal fires has lasted in the northern region of China. D. Coal fires can have an impact on the environment. 查看答案 更多"{{B}}第三篇{{/B}}"的相关试题: [单项选择]{{B}}第三篇{{/B}} {{B}}Plant Gas{{/B}} Scientists have been studying natural sources of methane for decades but hadn’t regarded plants as a producer, notes Frank Keppler, a geochemist at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. Now Keppler and his colleagues find that plants, from grasses to trees, may also be sources of the greenhouse gas. This is really surprising, because most scientists assumed that methane production requires an oxygen-free environment. Previously, researchers had thought that it was impossible for plants to make significant mounts of the gas. They had assumed that microbes need to be in environments without oxygen to produce methane. Methane is a greenhouse gas, like carbon dioxide. Gases such as methane and carbon dioxide trap heat in Earth’s A. The lower the temperature, the higher the amount of methane emissions. B. Living plants release less methane than dried plants at the same temperature. C. When exposed to sunlight, plants stop releasing methane. D. The higher the temperature, the greater the amount of methane emissions. 查看答案 我来回答: 提交 最新试题 ●    [多选题]车载ATP/ATO 设备故障，或车地间失去通信联系，车载设备产生报警并紧急制动停车。列车只 ●    [多选题]焦油的基本性质是（ ）。 ●    [单选题]功能杀虫止痒，壮阳通便的药物是 ●    [单选题]普通单开道岔直尖轨时，导曲线中部轨距加宽，向辙叉方向递减至距辙叉前端（ ）m处。 ●    [单选题]以下哪个不是人员管理体系的内容？ ●    [判断题]SDZ-3000测井系统声幅逻辑卡产生声幅测井仪的逻辑控制信号及交流微球测井仪的井径恒流供 网站地图 我要搜题网  版权所有  ©2024  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 截图扫码使用小程序[完全免费查看答案] 前往小程序 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码