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.
I learned to play the violin in about 3 1/4 years. It was a couple of years but I mastered it and it gives off a great feelig of accomplishment, i had classes very often 5 times a week after school! I even learned how to play the piano and a little bit of the sax while at Phillips Andover Academy.