Most insects have small holes in the exoskeleton called _____, which open and close to regulate air flow. a. bronchi b. alveoli c spiracles d. trachea

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Michael Insalaco · Answer 1 · 2017-10-12T01:06:14+0000

Most insects have small holes in the exoskeleton called spiracles, which open and close to regulate the air flow. The holes lead to the trachea. The correct answer is C, spiracles.

Most insects have small holes in the exoskeleton called _____, which open and close to regulate air flow. a. bronchi b. alveoli c spiracles d. trachea

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