@GustavinoBevilacqua @jones @sans_serif_girl @materialgirl

My first thought is that many membranes are permeable to gases. Our skin is kind of remarkable in what it *doesn't* let through. Other species can have gases diffuse through their skin.

I'm not a biologist, but I think that's part of why amphibians need to be wet, isn't it?

It could be very slow, but bell peppers don't expand very fast.