Insects, and some other invertebrates, exchange oxygen and carbon dioxide between their tissues and the air<span> by a system of </span>air<span>-filled </span>tubes<span> called tracheae. Tracheae open to the outside through small holes called spiracles. In the</span>grasshopper<span>, the first and third segments of the thorax have a spiracle on each side.</span>
I don't get the question, but if I had to guess what it'd have to be I'd say this statement is true. Many writers pushed boundaries, and experimented with what they were allowed to publish without restriction.
