Will we one day have a major global problem with phosphorus deficiency in the soil on agricultural land, so that there will be much more hunger?

I've heard that agriculture can lead to a phosphorus deficiency because the phosphorus isn't returned to the fields. Do you think there will be solutions?

If the dots are connected, what is the solution for nature and the environment and do they work?

That we use materials like lithium sparingly, recycle them and look for alternatives (is that possible)? That photovoltaics made from carbon are installed on almost every roof with solar thermal energy (carbon can be easily recycled)? That plastic can be turned back into oil (is that possible?)? That you have a food cultivation area with…