This technical note focuses on heavy. metal soil contamination. Metals in Soil. Mining, manufacturing, and the use of synthetic products (e.g. pesticides, paints, batteries, industrial waste, and land application of industrial or domestic sludge) can result in heavy metal contamination of urban and agricultural soils.
As a beginner, try practicing the guitar for 10-15 minutes a day. As you begin to build your finger muscles and improve your playing, you can increase this amount of time as you see fit. You may feel comfortable practice for 30 minutes per day, an hour per day, or even more.
The first thing everyone says about learning guitar (or any instrument) is that it takes discipline. While I do think practice and repetitive activity do require some degree of discipline, I think a passion to play is more important.