arreolaraul820 arreolaraul820

11-02-2021
Chemistry

contestada

Which stimulus causes a porcupine to extend its quills?
lunar effect on Earth
seasonal temperature changes
threatening behavior by predators
environmental encroachment by humans

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iStalingrad iStalingrad

11-02-2021

The answer is threatening behavior by predators. Reason is that it is used as a self defense strategy.

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