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.
Research shows that hiking has a positive impact on combating the symptoms of stress and anxiety, says Gregory A. Miller, PhD, president of the American Hiking Society. Being in nature is ingrained in our DNA, and we sometimes forget that.
Both hiking and trekking are activities involving physical movement, mainly walking. However, there are certain differences between the context and implication of the words. The main difference between the two is that hiking is mainly a leisure activity which is done by walking on well-made trails and man-made roads.