Complete the passage with the transition word or phrase that most logically connects the ideas.
Answer:In urban bioacoustics, researchers have observed that certain songbird species modify the frequency of their vocalizations in response to anthropogenic noise. In cities with high levels of low-frequency traffic din, birds must sing at higher pitches to prevent their signals from being masked. 【consequently】, urban populations of these birds display distinct acoustic profiles compared to their rural counterparts, demonstrating rapid behavioral adaptation to human-altered environments.
Answer
consequently
The correct transition must establish a cause-and-effect relationship between the fact that urban birds sing at higher pitches to avoid traffic noise masking and the resulting fact that urban populations display distinct acoustic profiles. Transition words like 'consequently', 'therefore', 'thus', or 'as a result' logically signal that the distinct profiles are a direct effect of the behavioral adjustments.
Step-by-Step Solution
Key Concept
Transitions: Cause and Effect