Urban heat islands present a significant environmental challenge, as concrete surfaces absorb solar radiation and raise city temperatures. To address this issue, urban planners are increasingly implementing green roofs—vegetated layers grown on rooftops. These green roofs act as natural insulators, cooling buildings and reducing the surrounding air temperature through evapotranspiration. Early studies in Chicago confirm that wide-scale adoption of vegetated roofs can lower citywide temperatures by up to two degrees Celsius. Consequently, many municipalities are now offering tax incentives to encourage property owners to install green roofs.
Which choice best describes the overall structure of the text?
- AThe text critiques a conventional method of urban construction, proposes a modern alternative, and argues that the alternative is too costly to adopt.
- BThe text compares two distinct approaches to reducing city temperatures, analyzes data supporting each approach, and recommends one over the other.
- The text identifies an environmental issue, describes a specific method to address it, details the mechanism of this method, and highlights measures promoting its use.Answer
- DThe text highlights a scientific study conducted in Chicago to argue that green roofs are the only effective way to prevent solar radiation absorption.
Answer
The text identifies an environmental issue, describes a specific method to address it, details the mechanism of this method, and highlights measures promoting its use.
The passage begins by identifying an environmental issue (urban heat islands raising city temperatures) and then describes a specific method (green roofs) to address it. It goes on to explain the mechanism of this method (evapotranspiration and insulation) and concludes by highlighting measures (tax incentives) that promote its use. Therefore, the option describing this sequence of moves is correct.
Step-by-Step Solution
Key Concept
Overall Text Structure Analysis
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