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Biology 16 Online
OpenStudy (tanya123):

Describe two structures that allow arthropods to breathe air.

OpenStudy (koikkara):

@tanya123 Since direct answers are not allowed, and also the respective teachers are hunting for the cheaters, I'll help you have some hints.. >>Tracheal tubes are used by most terrestrial arthropods >>Ref: http://en.wikipedia.org/wiki/Arthropod Wondering If you are satisfied with this answer, Please close this Question. Thank You ! Keep in touch with Open Study.. Bye !

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