The hedgehog has needles, sometimes the hedgehog curls up into a ball. Name the type of adaptation, explain its biological significance and relative nature.
1) type of adaptation – morphological adaptation
2) biological significance – protection of the animal from enemies
3) this device is ineffective against foxes; the fox throws the hedgehog into the water, he is forced to “turn around” in the water, and the fox, diving, grabs the hedgehog by the abdomen
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