Did you know that I have been posting facts of the day since January 21, 2013? Yay for three years! Unfortunately I did not start my blog until August 2015. But I have posted many of my old facts from before so they can all be in one place. Now for the real fact of the day...
Did you know ants don't have lungs? In fact, they don't even have blood vessels. Instead their respiratory system consists of spiracles, tiny holes on the side of their body, and trachea, tubes allowing oxygen to travel directly to the tissues. Although it's a great way to get oxygen directly to your cells without having to you know...exchange gas at the lungs and then pump the oxygenated blood around the body through arteries...an insect's tracheal lining needs to comes off when an insect molts. So in addition to shedding its skeleton, it also needs to pull its "lungs" out of its mouth. Eeps!
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