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Social Studies, 30.03.2021 03:20 Kitkatuu

A seal has to breathe even if it is asleep. Martin observed a seal for one hour. At the start of his observation the seal dove to the bottom of the sea and started to sleep. In 8 minutes it slowly floated to the surface and took a breath. In 3 minutes it was back at the bottom of the sea again and the whole process started over in a very regular way. After one hour the seal was:

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A seal has to breathe even if it is asleep. Martin observed a seal for one hour. At the start of his...
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