In the far right corner is an ant. This little guy is as hard as rock, so if you were to step on him you would hear a crunch. This is due to his structure, ants have their skeleton on the outside, hence exo. This outer cover protects their body which an an evolutionary advantage because they are so small and vulnerable to danger. Having an exoskeleton means they are an invertebrate thereforethey don't have lungs and organs. Ants oxygen transports through their exoskeleton through spiracles.
+5/5 - good connection - next time you need to cite your information though - we did not go over spiracles
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