Emotional and cognitive changes. The emotional and cognitive effects of MS are often its greatest challenges. Last updated: 10th November 2016. Some of the most common but hidden symptoms of MS are the changes people may experience related to cognition and their emotions. These changes can affect the way people feel about themselves and alter their cognitive functions. For many, the emotional and cognitive effects of the disease represent its greatest challenges.
A 'Mineral Resource' is a concentration or occurrence of material of intrinsic economic interest in or on the earth's crust in such form, quality and quantity that there are reasonable prospects for eventual economic extraction.
Coal, produced over millions of years, is a finite and non-renewable resource on a human time scale. A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames.An example is carbon-based, organically-derived fuel.The original organic material, with the aid of heat and pressure, becomes a fuel such as oil or gas. Earth minerals and metal ores, fossil fuels (coal, petroleum, natural gas) and groundwater in certain aquifers are all non-renewable resources.t present, the main energy source used by humans is non-renewable fossil fuels. Since the dawn of internal combustion engine technologies in the 17th century, petroleum and other fossil fuels have remained in continual demand.