As well as pointing out we have been screwing up the soil for decades, in case ya didn't know, it gives a comprehensive outline of the various components of soil and the life (that should be) inside it and their role in keeping the soil healthy and providing plants what they need to grow.
https://www.soilassociation.org/media/4 ... n-2015.pdf
It's a worthwhile read to anyone which grows anything especially in soil and lets face it, it's the best way to grow
