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Zorluk: OrtaExplicit Causal Relationships

During the Paleocene-Eocene Thermal Maximum (PETM) approximately 56 million years ago, global temperatures rose rapidly. While the exact trigger for this initial warming remains a subject of intense debate, some paleoclimatologists hypothesize that massive volcanic eruptions were responsible. However, the subsequent prolonged duration of the PETM is widely attributed to a different mechanism: the destabilization of methane hydrates. As the initial anomalous warming penetrated the deeper ocean layers, the increased temperature of the ocean floor caused these ice-like hydrate structures to dissociate. This dissociation released immense volumes of methane into the atmosphere. The sudden atmospheric influx of methane dramatically amplified the greenhouse effect, establishing a feedback loop that sustained elevated global temperatures until the carbon cycle could eventually reabsorb the excess atmospheric carbon.

According to the passage, the dissociation of methane hydrates during the PETM was explicitly caused by which of the following?

  1. The penetration of anomalous initial warming into the deep-ocean layersCevap
  2. B
    The dramatic amplification of the greenhouse effect within the atmosphere
  3. C
    A sudden decrease in ocean floor pressure driven by fluctuating sea levels
  4. D
    The definitive trigger event that initially initiated the global warming period
  5. E
    Massive volcanic eruptions hypothesized by a subset of paleoclimatologists

Cevap

The penetration of anomalous initial warming into the deep-ocean layers.
The passage provides a direct, explicit causal statement: 'As the initial anomalous warming penetrated the deeper ocean layers, the increased temperature of the ocean floor caused these ice-like hydrate structures to dissociate.' The correct answer accurately paraphrases this event.

Adım Adım Çözüm

1
Analyze the question stem to identify the specific causal relationship being tested.
The question asks for the explicit cause of the 'dissociation of methane hydrates.'
Focusing on the exact phenomenon isolates the correct link in a multi-step causal chain.
2
Scan the passage for the exact term 'dissociate' or 'destabilization' and locate the preceding causal trigger.
The text states: 'As the initial anomalous warming penetrated the deeper ocean layers, the increased temperature of the ocean floor caused these ice-like hydrate structures to dissociate.'
Textual evidence must directly support the causal link to avoid inferential leaps.
3
Evaluate the options against the identified textual evidence.
The correct option paraphrases 'anomalous warming penetrated the deeper ocean layers' and 'increased temperature of the ocean floor.'
Correct answers in explicit detail questions often accurately paraphrase the passage rather than quoting it verbatim.

Anahtar Kavram

Identifying Explicit Causal Relationships
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Konular

Explicit Causal Relationships

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