answersLogoWhite

0

It hasn't. There've been insects measuring two meters in length or more. Although this was during times when the Earth's atmospheric partial O2 pressure was much higher. Insects, having a passive respiratory system, require a much larger O2 pressure to oxygenate large body volumes, and the current O2 pressure does not support large insects.

User Avatar

Wiki User

11y ago

What else can I help you with?