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ARC-Easy / Mercury_7194495 / Scientists have observed that, even within the same nest, some young birds call…

Problem

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question

Scientists have observed that, even within the same nest, some young birds call louder than others. Which describes how a louder cry helps to ensure survival?

choices

  • Lung capacity is increased.
  • Exposure to bacteria is increased.
  • Parents are able to identify the nest.
  • Parents respond by giving more food.

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