Going to Shizuoka

Fine

I am in Shizuoka. A reason I came here is to see a friend who has just married, we have a party. I have driven to here by my truck. It took about 10 hours, as it as only 4 gears.
First I visited MOA head quarter which is located in Izunokuni city. People there are very kind, and loved to talk about agriculture. They showed me a lot about their research institute. They have not brought in any compost or fertiliser from outside. The manure comes from healthy soil and it goes around and comes around.
I understand, nitrogen, oxygen, hydrogen and carbon come and go as they can be the gaseous body. But how about magnesium or calcium? They can not be the gas.