虚度
发表于 2025-3-28 14:45:17
Climate System and Carbon Cycle Feedbackclosely coupled to the carbon cycle. During the four last glacial cycles, over the past 420,000 years, atmospheric CO. had excursions from 200 ppmv during cold glacial periods, up to 280 ppmv during warm interglacial periods (Petit et al. 1999) (see fig. 1a). Other trace gases such as methane also s
electrolyte
发表于 2025-3-28 19:22:56
Global Climate Change and Economic Analysisbook). It was not until the 18th century when economic activities started to change this. By today the atmospheric concentrations of greenhouse gases, and among them carbon dioxide (CO.), methane (CH.) and nitrous oxide (N.0) have surpassed preindustrial levels. The CO.-concentration in the atmosphe
过多
发表于 2025-3-29 01:43:57
From Nature-Dominated to Human-Dominated Environmental Changes, to a century with a probable further acceleration in the pace of environmental change, resource use, and vulnerability for societies and economies, we have to rethink the changing relationship between nature and human beings from the past, through the present, towards a future full of uncertainty.
progestin
发表于 2025-3-29 05:17:41
Water Quality and Health Risksthe implementation of sewage systems and water treatment by sand filtration and disinfection. The availability of water is a prerequisite for improved health and sustainable development. It has social, economic and environmental values. Today, there is no doubt that the quality of water for human co
GENRE
发表于 2025-3-29 10:41:16
Urban Thirst for Water and Priorities for Action river basin (Ayibotele and Falkenmark 1992). It is widely believed that improvement in the supply of water and sanitation can play a major role in improving the lives of the poor in developing countries. The industry sector in the West has realised the importance of depleting fresh water resources
某人
发表于 2025-3-29 14:50:45
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ADAGE
发表于 2025-3-29 19:23:13
The Earth System: An Anthropogenic Perspective. requires States to cooperate more intensively. In particular, the development of new institutional forms of co-operation for the protection of the integrity and sustainability of the environment is necessary..
曲解
发表于 2025-3-29 22:21:45
Global Climate Change and Economic Analysisre has grown from 280 to about 360 ppbv and is approaching 400 ppbv which is far beyond the concentrations that have been observed in the last half million years. CH. has grown from 700 to 1720 ppbv and N.O from 275 to 310 ppbv (IPCC 1995).
评论者
发表于 2025-3-30 03:16:47
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来就得意
发表于 2025-3-30 07:56:35
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