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.
This question asks us to identify the word from the given options that means 'incursion', based on the provided passage. We need to carefully read the passage and understand the context in which words are used to find the correct synonym.
The word 'incursion' generally refers to an invasion or attack, especially a sudden one into enemy territory. It can also mean an act of entering or intruding into a place or domain, often in a disruptive or unwelcome way.
The passage states: "Invasion of natural habitats have hastened species extinction." This sentence directly uses the word 'invasion' in relation to natural habitats being entered or encroached upon, which mirrors the meaning of 'incursion'.
Let's examine each option to see which one best matches the meaning of 'incursion':
Meaning: The act or instance of invading; hostile entrance into a territory or region. This aligns very closely with the definition of 'incursion', especially in the context of entering natural habitats.
Meaning: Concentrated or thorough. The passage uses this word in the phrase "intensive agriculture", describing a type of farming, not an act of entering.
Meaning: Very great, intense, or serious. This word describes the intensity of problems like desertification ("Desertification has been severe...") but is not related to the meaning of 'incursion'.
Meaning: The action or process of intervening; interference. While it involves entering a situation, it typically refers to meddling or taking action to influence an outcome, often by governments ("Government intervention..."). It's different from a physical or territorial incursion.
Comparing the meanings, 'invasion' is the word that best captures the sense of 'incursion' as an unwelcome entry or encroachment, particularly as suggested by its usage in the passage regarding natural habitats.
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’?
What are ice shelves?
What are icebergs?
When the iceberg turns upside down, it appears ________.
The use of science in its simple form has helped man to ____________