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Zorluk: Çok zorWeakening Arguments

A regional agricultural board planned to reduce crop losses caused by the invasive stem borer beetle by introducing a parasitic wasp species known to prey exclusively on stem borer larvae. In field trial plots located in low-altitude valleys, the wasp was released, and stem borer larva populations dropped by 70%70\% within one season, leading to a substantial decrease in crop damage. Based on these results, the board concluded that releasing the wasp regionally will reliably protect crops from stem borer damage across all commercial farming zones in the region. Which of the following, if true, most seriously weakens the agricultural board's argument?

  1. The parasitic wasp cannot survive winter temperatures characteristic of the region's primary commercial farming zones, which are located at much higher altitudes than the trial plots.Cevap
  2. B
    Farms in neighboring regions that did not participate in the field trials experienced no decrease in crop losses caused by stem borer beetles during the trial period.
  3. C
    Chemical pesticides currently utilized by farmers in the region have shown a 25%25\% decline in effectiveness over the past decade due to developed pest resistance.
  4. D
    Introducing the parasitic wasp will require commercial farmers to invest a minor amount of time attending introductory workshops on insect release protocols.
  5. E
    The stem borer beetle's larval stage was identified by entomologists as the primary driver of agricultural damage prior to the initiation of the trial.

Cevap

The argument is most seriously weakened by the fact that the parasitic wasp cannot survive the winter temperatures in the region's primary commercial farming zones.
The correct answer weakens the argument by exposing a flaw in generalizability. The agricultural board assumes that success in low-altitude trial plots guarantees success across all commercial farming zones. If the main commercial farming zones experience winter temperatures too cold for the wasp to survive due to higher altitude, the wasp population will fail to establish itself and cannot provide reliable crop protection.

Adım Adım Çözüm

1
Deconstruct the argument's premises and main conclusion.
Premise: Releasing wasps in low-altitude trial plots reduced stem borer larvae by 70% and significantly decreased crop damage. Conclusion: Regional release of the wasp will reliably protect crops across all commercial farming zones in the region.
Understanding the precise leap from trial plot results to region-wide application is essential to identifying logical vulnerabilities.
2
Identify the unstated assumption linking premise to conclusion.
The argument assumes that environmental and operational conditions in the trial plots are representative of all commercial farming zones in the region.
For trial results to predict regional outcomes, key conditions affecting wasp survival must be consistent across zones.
3
Evaluate answer choices for information that shatters this assumption.
Evidence that the wasp cannot survive winter temperatures in the main commercial farming zones (due to altitude differences) proves the trial results cannot be replicated regionally.
If the wasp dies off during winter in primary farming areas, it cannot provide sustained or reliable crop protection.

Anahtar Kavram

Generalizability of Trial Results and Environmental Constraints in Biological Plans
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Konular

Weakening Arguments

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