Moderate

In order for a frog's visual "bug-detector" to work, the bug must be: _____________?

Correct answer: D. moving

  • A. colored
  • B. coming closer to the frog
  • C. stationary
  • D. moving

Explanation

A frog’s visual bug detector responds especially to movement, helping the frog detect prey against a background. A stationary object is less likely to trigger this specialised detection system.

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