http://huzhangao.blog.163.com/blog/static/4527095820096208125120/
由于在全球变暖中起到了促进作用，二氧化碳被搞得声名狼藉，而且这也是罪有应得。然而，科学家们称，5,500万年前地球温度有过一次神秘的升高 ...
Lining 发表于 2009-7-29 16:12 http://www.dolc.de/forum/images/common/back.gif
你的链接挂了
请问斑斑今天的题是这个么？
问：什么是末次冰期(LGM)？
答：
The Last Glacial Maximum (LGM) refers to the time of maximum extent of the ice sheets during the last glacial period, approximately 20,000 years ago. This extreme persisted for several thousand years.
At this time, ice sheets covered the whole of Iceland and all but the southern extremity of the British Isles. Northern Europe was largely covered, the southern boundary passing through Germany and Poland, but not quite joined to the British ice sheet. This ice extended northward to cover Svalbard and Franz Josef Land and eastward to occupy the northern half of the West Siberian Plain, ending at the Taymyr Peninsula. In North America, the ice covered essentially all of Canada and extended roughly to the Missouri and Ohio Rivers, and eastward to New York City. A person could theoretically walk from North America to Europe across the frozen north Atlantic ice sheet.
In the Southern Hemisphere, the Patagonian Ice Sheet covered Chile and western Argentina north to about 41 degrees south. Ice sheets also covered Tibet (scientists continue to debate the extent to which the Tibetan Plateau was covered with ice), Baltistan, Ladakh, the Venezuelan Andes and the Andean altiplano. In Africa, the Middle East and Southeast Asia, many smaller mountain glaciers formed, especially in the Atlas, the Bale Mountains, and New Guinea.
The Ob and Yenisei Rivers had their flows stopped by the vast ice sheets, creating huge pluvial lakes.
Permafrost covered Europe south of the ice sheet down to present-day Szeged and Asia down to Beijing. In North America, latitudinal gradients were so sharp that permafrost did not reach far south of the ice sheets except at high elevations.
The Indonesian islands as far east as Borneo and Bali were connected to the Asian continent in a landmass called Sundaland. Palawan was also part of Sundaland, while the rest of the Philippine Islands formed one large island separated from the continent only by the Sibutu Passage and the Mindoro Strait. Australia and New Guinea were connected forming Sahulland. Between Sundaland and Sahulland, Wallacea remained islands, though the number and width of water gaps between the two continents were considerably smaller.
斑斑有时候还是很好滴 {:5_395:} 谢谢哈
请问斑斑今天的题是这个么？
问：什么是末次冰期(LGM)？
答：
The Last Glacial Maximum (LGM) refers to the time of maximum extent of the ice sheets during the last glacial period, approximately 20,000...
VinniDoll 发表于 2009-7-29 23:51 http://www.dolc.de/forum/images/common/back.gif
有时候。。。
今天题目还没出呢
你搞这么长的答案谁看呀。。
有时候。。。
fizza 发表于 2009-7-29 23:53 http://www.dolc.de/forum/images/common/back.gif
{:5_387:} 斑斑今天闹心了
{:5_387:} 斑斑今天闹心了
AWIWI 发表于 2009-7-29 23:57 http://www.dolc.de/forum/images/common/back.gif
我闹心啥哇
偶可是为了力求准确呀！{:4_279:}
今天题目还没出呢
你搞这么长的答案谁看呀。。
fizza 发表于 2009-7-29 23:53 http://www.dolc.de/forum/images/common/back.gif
{:5_387:}
有时候。。。
fizza 发表于 2009-7-29 23:53 http://www.dolc.de/forum/images/common/back.gif
环境科学的主要任务包括哪些？
答：（1）探索全球环境的演化规律，包括环境的基本特性、结构、演化机理和规律，目的在于使人类改造环境的活动符合自然界的客观规律，使其朝有利于人类的方向发展，避免向不利方向发展。
（2）研究人类活动同自然生态之间的关系，主要是研究人类生产生活活动同环境的物质循环如何保持动态平衡，使人类与环境能够协调发展。
（3）研究环境变化对人类生存和发展的影响，包括环境退化的原因、污染物对环境质量和人体健康的影响。这些研究可以为维护环境质量。制定各种环境质量标准、污染物排放标准提供科学依据。
（4）研究区域环境污染和破坏的综合防治措施，包括技术的、经济的、管理的等等。这些研究可以为国家制定环境规划、环境政策以及环境与资源保护立法提供依据。
环境科学的主要任务包括哪些？
答：（1）探索全球环境的演化规律，包括环境的基本特性、结构、演化机理和规律，目的在于使人类改造环境的活动符合自然界的客观规律，使其朝有利于人类的方向发展，避免向不利方向发展。
（2）研究人类活动同自然生态之间的关系，主要是研究人类生产生活活动同环境的物质循环如何保持动态平衡，使人类与环境能够协调发展。
（3）研究环境变化对人类生存和发展的影响，包括环境退化的原因、污染物对环境质量和人体健康的影响。这些研究可以为维护环境质量。制定各种环境质量标准、污染物排放标准提供科学依据。
（4）研究区域环境污染和破坏的综合防治措施，包括技术的、经济的、管理的等等。这些研究可以为国家制定环境规划、环境政策以及环境与资源保护立法提供依据。