the title is pretty self explanatory why can’t bugs be big
In: Biology
Most of the answers are close but don’t hit it completely.
1. It is possible for bugs to be big, they were big once during the Carboniferous and Permian periods (about 300 mya).
2. When bugs were bigger there was a higher concentration of oxygen, there is less oxygen now a days.
3. The lower oxygen levels wouldn’t be such a problem today but bugs don’t have active gas exchange organs like lungs, they have tracheae or book lungs with spiders and scorpions.
AND the one that everyone is still missing 4. insects have open circulatory systems, along with lungs another ‘inefficiency’ that makes low oxygen levels tough.
Related: Giant scorpions are the stuff of my nightmares.
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