As energy becomes more expensive and the current period of climatic stability draws to a close, it will be increasingly difficult to maintain present levels of population and complex urban societies. As in previous eras, human populations may fall and undergo cultural simplification in response to ...
Agriculture plays an essential role in the rise of the human civilization. Even though agriculture is contributing to employment of a significant part of the population in majority nations, over the years, the percentage of workers has witnessed a steep decline. According to world-wide estimations,...
The human population increases by between 93 to 95 million people annually and it is estimated that it will be about 8 billion by 2020 (Gore, 1993). As a result, there is a growing concern for the total world environment and the realisation that food production must be markedly increased ...
While humanity faces an uphill battle to feed its growing population, climate change is causing droughts and extreme weather in agricultural centers like California and eastern Australia. Cities aren't safe, either. In 2018, Cape Town, South Africa, nearly ran out of water due to drought. Its...
Humans use water for three basic purposes: agriculture, industry, and domestic and municipal use (water for drinking, cooking, cleaning, and so forth). And the amount of water【C1】___to each person decreases as the population grows,【C2】___the possibility of water shortages. Water ...
Impact Study on Human Activity to the Resource-environment Based on the Consumption Level Difference of China's Provinces or Autonomous Regions The study on population and the resource-environment by the consumption may contribute to the further cognition about their correlations and provide the po.....
These are number of dry months, importance of domesticated animals to subsistence, use of the plow, crop type, and population density. Of these, the first two are the most powerful predictors of female agricultural contributions, while population density has only very weak effects.MICHAEL L. ...
Agriculture accelerates loss of biodiversity in all these regions as farmers attempt to increase crop and animal production to feed the growing population and boost national economies. Tradition...关键词: agricultural policy agricultural production arid zones biodiversity environmental impact environmental ...
This poses a threat toagricultureand the food chain, and consequently to human health. 这会对农业和食物链造成威胁,由此而危及人的健康。 《牛津高阶英汉双解词典》 Europeanagricultureministers failed to break the deadlock over farm subsidies.
aat the end of the 20th centuryIn Britain, where nearly 70 percent of the population was engaged in agriculture at the end of 17th century, less than 2 percent worked on farms . 在第20 centuryIn英国的末端,几乎人口70%订婚农业在17世纪的结尾,少于2%在农场运作。[translate]...