Can agricultural productivity meet human needs in the long run ? Since twentieth century advances, given increasing costs, do not seem sustainable, further increases in output will not be achieved easily. Global population growth, while showing signs of slowing down, has pushed farmers and herders into areas unsuited to intensive agriculture, accelerating worldwide ecological disruptions. Reserves of arable land and fresh water have diminished alarmingly. Chemical runoffs have compounded pollution problems. Invasion of natural habitats have hastened species extinction. Desertification has been severe in the last hundred years, especially in North Africa, southern portions of Africa, Australia, northern Mexico, and the American Southwest. Tropical forests have shrunk by one-half since World War II, with agricultural pressures causing three-quarters of that loss. Government inter-vention has produced its share of catastrophes, ranging from a terrible famine in China between 1958-1961 that may have killed 30 million people and destroyed the Aral Sea. Taking everything into consideration, we may remain hopeful about humankind's agricultural prospects, but we can scarcely look forward optimistically at the end of the first quarter of the twenty-first century.
The passage examines the long-term viability of agricultural productivity to meet human needs. It highlights several significant challenges emerging since the twentieth century:
These points collectively paint a picture of significant environmental and resource-related stress on global agriculture.
Despite the serious challenges outlined, the author concludes with a mixed perspective. The final sentence states: "Taking everything into consideration, we may remain hopeful about humankind's agricultural prospects, but we can scarcely look forward optimistically at the end of the first quarter of the twenty-first century."
This statement indicates that while there are reasons for optimism regarding humanity's ability to manage agricultural prospects, there are also significant concerns that temper a fully positive outlook, suggesting a degree of skepticism about the near future.
Let's analyze the given options based on the author's conclusion:
Based on the detailed analysis of the passage, particularly the concluding sentence, the author expresses a dual viewpoint. They see potential for hope but are also wary of future challenges, leading to a skeptical stance regarding the immediate future. Therefore, the conclusion that the author is both hopeful and sceptical aligns precisely with the text.
Which one of the following is NOT the reason for the difficulty in estimating the number of languages of the world?
Which one of the following is a way to establish the discovery of a new language?
Which one of the following statements is correct?
“The people may be known, but the identity of their language may not be”, means:
Which one of the following words from the passage means “come to be known”?
What is the meaning of ‘intrigued’?
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What are icebergs?
When the iceberg turns upside down, it appears ________.
The use of science in its simple form has helped man to ____________