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

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the answer to your question is spiracles
User Pwdr
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[] Question #7


Most insects have small holes in the exoskeleton called _____, which open and close to regulate air flow.
bronchi
alveoli
>> spiracles
trachea
User Tomalec
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8.0k points