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The hydrostatic skeleton of the earthworm allows it to move around in its environment by _____.

A) walking on its limbs
B) crawling with its feet
C) swimming with its setae
D) using peristaltic contractions of its circular and longitudinal muscles
E) alternating contractions and relaxations of its flagella

Marked as best answer by Zuleyka


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Answer: D

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Muchas Gracias :)