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Everything is a loop
A willow, a pot and five years: the tree gained roughly 74 kilos and the soil lost 57 grams. Almost everything a plant is comes from air and water.
Not written yet
What you'll learn (once I've written it)
- ✦The carbon, nitrogen, phosphorus, potassium and water loops in one picture
- ✦Where every loop leaks: leaching, gassing off, erosion and the harvest
- ✦Why phosphorus is the loop humans broke: from mine to sewer to sea