Exolore: facts-based fictional worldbuilding cover image

The World of Giant Touchy Arachnids

Exolore: facts-based fictional worldbuilding

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Is It a Hibernation?

In this scenario, if there's lower oxygen concentration levels, and they probably are really small rather than really big. Why does the amount of oxygen affect size? Because they passively respire. So instead of having lungs that breathe in and out, they have more like gill structures,. actually, they are internalized kills tan that oxygen just diffuses over. And so overtime, larger sizes get selected for instead of against.

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