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Câu hỏi:

22/07/2024 532

 

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50

Plants and animals will find it difficult to escape from or adjust to the effects of global warming. Scientists have already observed shifts in the lifecycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring. Many species have begun shifting where they live or their annual migration patterns due to warmer temperatures.

With further warming, animals will tend to migrate toward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bears and marine mammals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.

Projecting species extinction due to global warming is extremely difficult. Some scientists have estimated that 20 to 50 percent of species could be committed to extinction with 2 to 3 Celsius degrees of further warming. The rate of warming, not just the magnitude, is extremely important for plants and animals. Some species and even entire ecosystems, such as certain types of forest, may not be able to adjust quickly enough and may disappear.

Ocean ecosystems, especially fragile ones like coral reefs, will also be affected by global warming. Warmer ocean temperatures can cause coral to “bleach”, a state which if prolonged will lead to the death of the coral. Scientists estimate that even 1 Celsius degree of additional warming could lead to widespread bleaching and death of coral reefs around the world. Also, increasing carbon dioxide in the atmosphere enters the ocean and increases the acidity of ocean waters. This acidification further stresses ocean ecosystems.

The bleaching of coral reefs as mentioned in paragraph 4 indicates ______. 

A. the water absorption of coral reefs 

B. the quick growth of marine mammals 

C. the blooming phase of sea weeds 

D. the slow death of coral reefs 

Đáp án chính xác

Trả lời:

verified Giải bởi Vietjack

Đáp án D

Kiến thức: Đọc hiểu

Giải thích:

Việc tẩy trắng các rạn san hô như được đề cập trong đoạn 4 chỉ ra ______.

A. sự hấp thụ nước của các rạn san hô

B. sự phát triển nhanh chóng của động vật có vú biển

C. giai đoạn nở hoa của cỏ dại

D. sự chết chậm của các rạn san hô

Thông tin: Warmer ocean temperatures can cause coral to “bleach”, a state which if prolonged will lead to the death of the coral.

Tạm dịch: Các nhà khoa học ước tính rằng thậm chí 1 độ C của sự nóng lên thêm có thể dẫn đến tẩy trắng và tử vong trên các rạn san hô trên khắp thế giới. 

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