I`m searching information all over the world. My aim is to build a lively place underground the earth. That`s why I need a hole ecosystem. There are now some steps I need to do, to make this happen.
Oxygen:
It`s something we don`t need to make a lot of effort.
We need so tree`s and plant`s to have enough.
https://www.schule-und-familie.de/wissen-wieso-weshalb-warum/natur/woher-kommt-der-sauerstoff-den-wir-atmen.html
Water:
You take the strongest material & heat it. The heat is controlled and
heated by electricity. This is how hydrogen is produced. It flows finally to the
tap water.
I still have a filter to cool the water.
In the end, we have drinkable water that will last forever.
To be continue