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Difficulty: MediumTransitions: Cause and Effect

The surface of Venus is permanently shrouded by a dense atmosphere composed primarily of carbon dioxide and thick clouds of sulfuric acid, which efficiently trap incoming solar radiation. _______, the planet experiences a runaway greenhouse effect that elevates surface temperatures to a scorching 460∘C460^\circ\text{C}—hot enough to melt lead—making it the hottest planet in our solar system despite not being the closest to the Sun.

Which choice completes the text with the most logical transition?

  1. As a resultAnswer
  2. B
    However
  3. C
    Moreover
  4. D
    Subsequently

Answer

As a result
The passage presents a cause-and-effect relationship: Venus's dense atmosphere traps solar radiation (cause), which directly leads to a runaway greenhouse effect and high surface temperatures (effect). The transition 'As a result' correctly signals this relationship.

Step-by-Step Solution

1
Analyze the relationship between the two sentences in the passage.
The first sentence explains that Venus's dense atmosphere traps incoming solar radiation. The second sentence describes the runaway greenhouse effect and extreme surface temperatures that occur because of this trapped radiation.
Identifying the logical relationship between the sentences is necessary to choose the correct transition word.
2
Identify the type of connection between the cause (trapping solar radiation) and the effect (runaway greenhouse effect and high temperatures).
The connection is cause-and-effect, meaning the second sentence is a direct consequence of the first.
This narrow logical relationship guides the selection of the correct category of transition word.
3
Evaluate the choices to find the transition that indicates a cause-and-effect relationship.
'As a result' is a cause-and-effect transition, while 'However' shows contrast, 'Moreover' shows addition, and 'Subsequently' shows chronological sequence.
Matching the identified relationship to the definition of the transition words yields the correct answer.

Key Concept

Transitions: Cause and Effect
Estimated Time:1m 0s
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Topics

Transitions: Cause and Effect

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