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.
In reference to the physical/mental/emotional benefits of being a vet, there is a great deal of satisfaction in knowing every day that you are working at the top of your abilities to make other people and animals happy, healthy and safe. + 6 others found this useful.Rayshaun Aldridge.here are many benefits to being a tour guide. you get to see  things for free that others have to pay for, you get to enjoy  nature, you learn new historical facts, and you â¦ get to meet new  people.