Do insects breathe?

COULD THEY EXIST IN SPACE?

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    Yes, insects require oxygen to survive. They do not breathe the same way humans breathe as they do not have lungs and do not need to circulate oxygen through a circulatory system like humans do. Instead, they have a tracheal system which is comprised of a series of tubes. These tubes carry the oxygen through the body and they release carbon dioxide through a gas exchange process. For this reason, as well as their need for habitat and finding food, insects could not survive in outer space. 

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