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Zorluk: OrtaSentence-Level Transitions

Until the late 1970s, scientists believed that all life on Earth ultimately depended on sunlight for energy through photosynthesis. This view was challenged in 1977 when researchers exploring the Galápagos Rift discovered thriving ecosystems surrounding hydrothermal vents on the ocean floor. Under high pressure and in complete darkness, these communities were completely cut off from the sun. <u>Consequently,</u> they relied on chemosynthesis, a process in which specialized bacteria convert toxic chemicals from the vents into usable energy.

Which of the following choices provides the most logical transition at the underlined portion?

  1. A
    NO CHANGE
  2. B
    Furthermore,
  3. Instead,Cevap
  4. D
    For instance,

Cevap

Instead,
The transition 'Instead,' is correct because it properly establishes a contrast, signaling that chemosynthesis was used as an alternative energy source because sunlight was unavailable.

Adım Adım Çözüm

1
Analyze the relationship between the sentence before the transition and the sentence starting with the transition.
The first sentence describes how deep-sea communities were cut off from sunlight. The second sentence describes their reliance on chemosynthesis.
Identifying the logical relationship is necessary to choose the correct transition word.
2
Evaluate the logical connection between the two sentences.
Since the communities had no sunlight, they used chemosynthesis as an alternative energy source. This represents a contrast or substitution relationship rather than addition, cause-and-effect, or illustration.
Determining the correct relationship type narrows down the correct transition category.
3
Test the options against the identified relationship to find the transition that signals substitution or contrast.
'Consequently' (cause-effect), 'Furthermore' (addition), and 'For instance' (illustration) are incorrect. 'Instead' correctly signals substitution.
Selecting the word that matches the target relationship ensures logical flow and coherence.

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