SAT Reading & Writing Practice Questions - SAT Reading And Writing Section Exam

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The following text is from a 2022 ecology study on urban bird populations. Researchers tracking house sparrows in three major cities found that birds living near green spaces had measurably lower stress hormone levels than birds in densely built areas. The researchers noted that even small parks—less than half a hectare—provided measurable physiological benefits to nearby bird populations. What is the main idea of the passage?

Urban birds experience higher stress than rural birds. Even small green spaces benefit urban bird health. House sparrows are the most studied urban bird species. Stress hormones are difficult to measure in wild birds.

Correct Answer:

Even small green spaces benefit urban bird health.

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