Question and answer
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
Most insects ha ve small holes in the exoskeleton called spiracles, which open and close to regulate air flow.
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Expert answered|Simeon D|Points 467|
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Asked 5/19/2019 12:23:18 AM
Updated 5/19/2019 12:42:11 AM
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Confirmed by MrG [5/19/2019 12:42:10 AM]
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