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Author: Allyne, Kerry
Publisher:
ISBN: 9780373040902
Category : Love stories, English
Languages : en
Pages : 571
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Book Description
Author: Allyne, Kerry
Publisher:
ISBN: 9780373040902
Category : Love stories, English
Languages : en
Pages : 571
Get Book Here
Book Description
Author: United States. Weather Bureau
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 416
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Book Description
Author: United States. Weather Bureau
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 988
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Book Description
Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 842
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Book Description
Author: United States. Weather Bureau
Publisher:
ISBN:
Category : Climatology
Languages : en
Pages : 28
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Book Description
Author: United States. Environmental Data Service
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 174
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Book Description
Author:
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 924
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Book Description
Author: Francis K. Schwarz
Publisher:
ISBN:
Category : Hawaii
Languages : en
Pages : 110
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Book Description
Author: Bharat Raj Singh
Publisher: BoD – Books on Demand
ISBN: 9535109340
Category : Science
Languages : en
Pages : 526
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Book Description
The Earth is the only planet in our solar system that supports life. The complex process of evolution occurred on Earth only because of some unique environmental conditions that were present: water, an oxygen-rich atmosphere, and a suitable surface temperature. Climate change refers to a statistically significant variation in either the mean state of the climate or in its variability, persisting for an extended period (typically decades or longer). Thus, it requires field of attention towards reduction in the rise in atmospheric temperature, by controlling emitted greenhouse gases into the atmosphere in order to preserve natural resources and by introducing new technologies on alternative fuels. This book presents the fundamental effect on the origin of climate change, impacts over ice cap, melting of Arctic ice, rise in sea level and related technologies that can be implemented to cultivate our land for agriculture, growing forestation to reduce the impact of temperature rise and disaster on human being as well as on other livelihood. This also need to strive for novel policies that world leader should adopt.
Author:
Publisher: Springer Science & Business Media
ISBN: 1461389828
Category : Science
Languages : en
Pages : 378
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Book Description
From the beginning of agriculture until about 1950, increased food production came almost entirely from expanding the cropland base. Since 1950, however, the yield per unit of land area for major crops has increased dramatically. Much of the increase in yields was because of increased inputs of energy. Between 1950 and 1985, the farm tractor fleet quadrupled, world irrigated area tripled, and use of fertilizer increased ninefold. Between 1950 and 1985, the total energy used in world agriculture increased 6. 9 times. Irrigation played a particularly important role in the rapid increase in food production between 1950 and 1985. The world's irrigated land in 1950 totaled 94 million hectares but increased to 140 million by 1960, to 198 million by 1970, and to 271 million hectares in 1985. However, the current rate of expansion has slowed to less than 1 % per year. The world population continues to increase and agricultural production by the year 2000 will have to be 50 to 60% greater than in 1980 to meet demands. This continued demand for food and fiber, coupled with the sharp decline in the growth rate of irrigation development, means that much of the additional agricultural production in future years must come from cultivated land that is not irrigated. Agricultural production will be expanded in the arid and semiarid regions because these regions make up vast areas in developing countries where populations are rapidly rising.
