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_______ are able to sleep with one eyes open.

ایک آنکھ کھلی رکھ کر سو سکتے ہیں۔ ______

Answer: Dolphin

Explanation
  • Dolphins exhibit unihemispheric sleep, where one brain hemisphere sleeps while the other stays awake.
  • This adaptation allows them to surface for air and remain alert to predators.
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