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.
Natural resources are things that occur naturally, and that are useful to us. They include fuels such as oil and natural gas, and materials such as iron ore, and timber. Renewable resources are those that are replaced in nature at a rate close to their rate of use e.g. plants, forests and animals. Care is needed to make sure resources are used sustainably and not over- harvested.