[culi]

Take a piss somewhere and wait 10 minutes. It'll be swarmed with butterflies who want the minerals you've laid out for them.

The Amazonian soil is actually extremely poor because of how much water runs through its soil. It's one of the reasons such biodiversity evolved in the first place. Poor soils favor a diversity of strategies while rich soils tend to form monocultures that quickly dominate

(Ofc terra preta, amongst other indigenous technologies, have also radically shaped the soil and its fertility)