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marine

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eshrag
0 42

How do marine mammals sleep underwater?

If marine mammals want to sleep, they can’t just close their eyes and drift away for the night, as they…
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غير مصنف

eshrag
0 94

These prehistoric marine reptiles evolved long necks by adding more vertebrae

Millions of years ago, as dinosaur giants were stomping around on land, other giant reptiles were dominating the oceans —…
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