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21 Dec 2019, 09:49
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Question 1
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
87% (02:03) correct
13%
(02:29) wrong
based on 68
sessions
History
Date
Time
Result
Not Attempted Yet
Eutrophication, the process by which a body of water acquires a high concentration of nutrients, has become known to the environmentally aware community as a key human stressor on the world's ecosystems. High concentrations of nutrients, specifically phosphates and nitrates, promote excess growth of primary producers. Excessive growth of algae and other simple photosynthetic organisms can deplete water of available oxygen, causing the death of other organisms inhabiting the water. Eutrophication can sometimes be a natural, slowly developing process, but human activity, specifically the overuse of fertilizers causing runoff from farm land that distributes nutrients to nearby waters, is greatly speeding up the problem. This water runoff causes in the local rivers, lakes, and coastal ocean waters unnaturally high rates of plant production and, eventually, an accumulation of organic matter that degrades water and habitat quality.
Riparian buffer zones, the interfaces between land and rivers or streams, are significant in many types of environmental management because of their role in soil conservation, their biodiversity, and their potential influence on aquatic ecosystems. Riparian zones occur in many forms, including grasslands, woodlands and wetlands; these surround freshwater, as well as marine ecosystems. Restoring these buffer zones between farm land and damaged aquatic systems is one step towards the reduction of eutrophic water. A comprehensive solution would also involve reducing livestock densities, improving the efficiency of fertilizer applications, treating urban runoff from streets and storm drains, and reducing nitrogen emissions from vehicles and power plants.
Riparian buffer zones, the interfaces between land and rivers or streams, are significant in many types of environmental management because of their role in soil conservation, their biodiversity, and their potential influence on aquatic ecosystems. Riparian zones occur in many forms, including grasslands, woodlands and wetlands; these surround freshwater, as well as marine ecosystems. Restoring these buffer zones between farm land and damaged aquatic systems is one step towards the reduction of eutrophic water. A comprehensive solution would also involve reducing livestock densities, improving the efficiency of fertilizer applications, treating urban runoff from streets and storm drains, and reducing nitrogen emissions from vehicles and power plants.
Which of the following best describes the role of the second paragraph above?
(A) to highlight the relative advantages of alternative methods to combat a problem
(B) to introduce a specific example of a previously introduced problem
(C) to provide evidence that refutes the main idea of the passage
(D) to explain a theory that is introduced in the first paragraph
(E) to describe methods for solving a problem introduced in the first paragraph
(A) to highlight the relative advantages of alternative methods to combat a problem
(B) to introduce a specific example of a previously introduced problem
(C) to provide evidence that refutes the main idea of the passage
(D) to explain a theory that is introduced in the first paragraph
(E) to describe methods for solving a problem introduced in the first paragraph
yashikaaggarwal
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24 Jun 2020, 10:20
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The First paragraph is briefing about Eutrophication, the process by which a body of water acquires a high concentration of nutrients.
its growth cause and effect relationship.
The second paragraph is talking about the methods to rectify the situation caused in first paragraph. A comprehensive solution would also involve reducing livestock densities, improving the efficiency of fertilizer applications, treating urban runoff from streets and storm drains, and reducing nitrogen emissions from vehicles and power plants. Hence E is the answer.
its growth cause and effect relationship.
The second paragraph is talking about the methods to rectify the situation caused in first paragraph. A comprehensive solution would also involve reducing livestock densities, improving the efficiency of fertilizer applications, treating urban runoff from streets and storm drains, and reducing nitrogen emissions from vehicles and power plants. Hence E is the answer.
01 Feb 2023, 03:04
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