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Biology 12 Online
OpenStudy (anonymous):

plz help

OpenStudy (anonymous):

Narwhals are aquatic mammals known for the giant tusk that protrudes from their upper lip. These mammals live in artic waters and can spend more than three hours at a time underwater at great depths that would crush other animals. The narwhal's ability to endure such long underwater dives is an example of ____________?

OpenStudy (anonymous):

Is it adaption or natural section?

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