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Zorluk: KolayCommand of Evidence: Textual

Ecologist Elena Vance hypothesized that the presence of high-canopy trees in urban parks is the primary factor influencing the nesting density of American robins (*Turdus migratorius*). To test this hypothesis, Vance surveyed robin nesting habits across several parks of varying vegetation types. Which finding from Vance's survey, if true, would most directly support the hypothesis?

  1. A
    Robins nesting in parks with high-canopy trees successfully raised more offspring per nest than robins nesting in parks with low-canopy trees did.
  2. B
    Robins are generally known to prefer nesting in environments that offer protection from ground-level predators.
  3. Parks with a higher number of high-canopy trees had a significantly greater density of robin nests than parks with fewer high-canopy trees did.Cevap
  4. D
    Parks with larger geographic areas tended to have a wider variety of bird species, including American robins.

Cevap

The finding that parks with a higher number of high-canopy trees had a significantly greater density of robin nests than parks with fewer high-canopy trees did.
The correct answer provides direct evidence supporting the hypothesis by showing a correlation between a higher presence of high-canopy trees and an increased density of robin nests, isolating the variables mentioned in the study.

Adım Adım Çözüm

1
Identify the primary hypothesis in the passage.
The hypothesis is that the presence of high-canopy trees in urban parks is the primary factor that influences the nesting density of American robins.
Understanding the specific relationship being proposed is necessary to determine what evidence would support it.
2
Evaluate the relationship described in each option to see which one directly connects the presence of high-canopy trees to nesting density.
The finding showing that parks with more high-canopy trees have a higher density of robin nests directly links the proposed cause (high-canopy trees) with the proposed effect (nesting density).
Supporting evidence must demonstrate the correlation or causal link proposed by the researcher.
3
Verify that other options do not address the specific variables of the hypothesis.
Other options describe unrelated variables like offspring success, general predator avoidance, or overall species diversity in relation to park size.
This confirms that the chosen option is the only one that directly supports the specific claim.

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Command of Evidence: Textual
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Command of Evidence: Textual

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