The extraction process to remove the lead from the sulfur is very simple, thus lead has been extracted from Galena since the earliest times.Galena from certain regions is rich in silver, and some specimens may contain as much as 20 percent silver. Because of this, silver-rich Galena is also an ore of silver.
Being exposed to sunshine will also increase your levels of vitamin D. Hiking is a cardiovascular activity, depending on how hard you push yourself during a hike, and thus has benefits for your cardiovascular system, such as reducing the chances of heart disease, and increasing your overall fitness.
Search form. Difference between Hiking and Backpacking. Key Difference: Hiking is basically walking in nature on any path or on a specific trail. Hiking only requires the person to walk t a normal to a brisk pace in order to reduce weight as well as get the fresh air from nature. Hiking is usually done over a day.